Sorry to hi jack but I'm About to finish my cbe to tbe and by reading the quoted comment was wondering if an up pipe with stock headers is worth it?

I changed up-pipe as i have a MY01 which had a cat in up-pipe. If you have anything other than a MY01, there is no gains in the up-pipe.

Headers, bit of torque to be gained if change to equal length afaik, on boost a bit sooner [paired up with a silicone inlet] but marginal to none overall power gains.