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Old 09-25-2013, 02:13 AM   #1
Allen Horton
Scooby Newbie
Member#: 315961
Join Date: Apr 2012
Chapter/Region: NWIC
Location: Everett, WA
2008 WRX
Dark gray metallic

Default 2008 wrx trans swap

So, i am looking into an STI trans for my '08 WRX. To anyone who has done this, what all is involved, and how much would you pay to do it?
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Old 09-25-2013, 07:48 PM   #2
Scooby Newbie
Member#: 256898
Join Date: Sep 2010
Chapter/Region: Tri-State
Location: New Jersey
2011 WRX Limited 6MT
World Rally Blue


i put a 2008 sti trans in my 2011 wrx and i did everything because i found a totaled 08 sti in a salvage yard

i did it the most expensive way and i kind wish i went another route but its done now.

so i think the cheapest way would to find a trans and matching rear from the same year, then use an automatic driveshaft, keep the factory hubs and brakes and finish it off with legacy spec b hybrid axles and the factory 6 speed full shifter assembly. you also need the 6 speed subframe and the 6 speed trans mount
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Old 09-25-2013, 08:35 PM   #3
Scooby Newbie
Member#: 177842
Join Date: Apr 2008
Location: Summerville, SC
2008 WRX


I did the swap on my 08 WRX, bought a 2010 STI six speed trans and rear diff from Just Japs in FLA. You can use Wrx front axles in the front. I used STI drive shaft and bought rear axles from the Driveshaft Shop that are R180 on one end and 5 x 100 at the other. My car is street mod autocross car and it puts down 350 hp and 400 torque at the wheels. The only problem I have had is breaking front axles, due to the big grip of R-comp tires. This might not be a problem with a street car. I also use a manual controller for the center diff but an automatic controller would work better.
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