I new they had glass trans, just didnt know how glassy until the ball fell in my own court. However 02-03 trans are about ~20% weaker due to slightly skinnier gear widths than 04+ years. ( I previous thought this was only 02 trans, however most of hte 03 trannies I came across had the same part # on them as my 02)
Balt21 wrote:wrx 5 speed + PPG straight cut 1st and 2nd, helical 3rd and 4th, stock 5th. DO IT!
I could have done that for $3500 bucks, I dont think so. I like the idea of owning an STI already coming stock with a trans thats as strong/stronger than that PPG. Not to mention the STI comes with a much stronger/better rear diff, and drive shaft. Where as you do the PPG trans, then still have the shit rearend in the WRX + 500 more dollars and you can swap it, then you need a different final drive in the WRX Trans to match the STI 3.90 final.
My synopsis. Drive the WRX nice, keep it under 280whp, or just start off with an STI and save yourself $$ in the long run if you built it.