No it doesnt fit the rs diff mounts are different to the vr4 and ayc evos!
but you can get a legnum st-r diff and axles which fits directly into galant/legnums for sure and then buy a evo rs plate type lsd centre cartrage which fits into the ST-R casings
this is what I have in my legnum and I much prefer it to Ayc plus its handled all the abuse I have thrown at it so far
I picked up my evo lsd cartrage from ebay for ~400NZD and got my open diff + both axles for ~200NZD + 80NZD for bearings and there you have it plate type vr4 lsd
~700 NZD is a hell of alot cheaper then 1500GBP
Does anyone know if a ayc diff centre and str type diff centres are the same? I have access to a cheap cusco centre for ayc casing but i got open wheel centre