Doing a build atm, shooting for reliable 300kwatw.... Have spoken to a few places in qld, rigoli(damn they like thier name and price accordingly...but they do only build top shelf) and a few other places over east.

...its all not cheap stuff, but as it stands currently a std 207 engine will be tougher than anyone in perth can build !

Most interesting quote from a syd workshop so far, seem to know thier stuff.

EJ257 short, forged rods, pistons and race bearings $5500 - all new, 300kwatw with right setup and turbo, you want it to rev tho it requires much spent on heads.

2.35/2.4 stroker, closed deck, all quality forged, new EJ257 crank - $5000

Still looking, currently driving around with a stripped block in my boot seeing what people can do .....won`t really know whats what for sure until the chicken hatches.