Hi to all.Currently run a ty752vn6aa gearbox in a 450bhp UK V4 and recently purchased (Sti 5/6,P1) TY754VBAAA box.Realise a rear diff will be required as final ratio is different to my original but what type exactly,are these R160,open,plated?Also with the change of gearbox will my driveshafts be compatible with the TY754VBAAA along with when purchased a rear diff?Any info would be much appreciated.Many thanks

 

You need a 4.44 AR160, with or without a viscuos LSD. These are the rear diffs on almost all Jap WRX and STi M/Y 97 onwards.

 

Many thanks Harvey for reply

 

I have a 4.44 diff here if you cannot get one locally. Straight off my STi 3 Wagon.