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Hey guys its me again.. hope u sifus r well!!!
Neway my question is...
My gear box copper is spoil after a long search for d copper i have got fed up... so i found evo 3 internals for gear 1st to 5th gear costin abt 800..

I heard u can use evo internals wit gsr final drive...

Any advise.. on any d diff if i would to change internals to evo 3 with d gsr final drive??
n does it improve my performance???