You can, sort of. But the stock 5 speed box design is also a split case system. Meaning they can twist with high pressure and cause problems. The 6 speed is a much better design that is solid. The gear unit slips out vertically instead of the 5 speed spliting lengthways.

The actual 5 speed design just isnt as good compared to the 6 speed.

Google some pics of the two boxes to see what i mean.

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Huge range of extinguisher brackets for cars!

http://kap.industries/

You need to differentiate between 'straight cut' & 'Dog box' Solarfilms

Straight cut & helical are gear teeth profiles

"Dog Box" refers to dog engagement rather than easy to drive Synchomesh that you have now. They are very different animals.

1St & 2Nd synchro straight cuts were a popular choice - they cannot be flat shifted though.

Dog engagement boxes are best left for race cars.

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[CENTER][SIGPIC][/SIGPIC][/CENTER]
[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]

I had straight cut syncro engagement 1st-4th in my GC8.
you get over the noise pretty quickly, especially when your doing around 60k's an hour and you have to sit in 4th. in my opinion 6 speed is the way to go, and it will probably be cheaper to fit a 6 speed as well!
i had receipts for my one that was done at maximum and from memory was about 8k

Aomeone is selling a whole six apeed package on sowa atm for 3500

using the Perth-WRX mobile app

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

Tow hooks, retro-fitted GD series carbon fiber bonnet scoops, STi seats, straight cuts... your priorities are all wrong.

Bigger turbo > tune > handling (sway bars, bushes, strut braces, suspension, etc) > bigger brakes WAYYYYYYYY before any of the shit you mention.

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[I]trolololol[/I]

I ain't catering for your needs trolley you're car and the order you modify it is you're business. Stop taking things out of context as well.

The main reason I started this thread was to gain some knowledge on this topic and majority of threads i start.

Chances are if i know about something I'm not gonna post about it eg sway bars+ End-links, Exhaust, Brakes there's already a million other threads that can search for too.

Sorry if power isn't main priority, I've barely experienced the limits of my car as is..

In order Wheels with wider tires > Sway Bars+ endlinks > Exhaust and tune > Brakes > Verticooler

The fuck is wrong with my stock turbo ?

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Wannabe Boy Racer- WRX 09 Slim Sedan 268.6HP 376.0 NM @1.2 Bar

Much wow
many powerr
very siberu

Why wouldn't you get the verticooler at the same time as the exhaust and tune? To get the maximun out of tve cooler it will also require a tune, so may aswell do it all together and save 250buks in the long run.

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The one perkent...

Far out hairdressers are an aggressive breed these days.

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MY08 WRX 325hp/456nm/18psi E85

I own the same car and have done enough research and reading in 6.5 years of ownership to know what to do to an 08/09/10 and in a reasonably logical order.

I am not car.
ps. *your

So stock power, haven't reached limits yet you want to go straight cuts?!



You said you wanted 300hp, right?

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[I]trolololol[/I]

Clearly missed the thing I said about years way down the road I mentioned in op.

What do you mean by hairdresser?



using the Perth-WRX mobile app

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Wannabe Boy Racer- WRX 09 Slim Sedan 268.6HP 376.0 NM @1.2 Bar

Much wow
many powerr
very siberu