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Old 05-07-2003, 04:27 PM   #6
Fred Zaplitny
Gone... But not forgotten
Member#: 92
Join Date: Jul 1999
Location: East Detroit, Michigan
1999 2.5RS Coupe
Blueish Kind of


Originally posted by Subie Gal
you cant just upgrade the block...
you'd need a new tranny as well ...

stock tranny cant handle the added power..
also, you'll need to add a mapping system
or add a new wiring harness and/or new ECU

dont forget the new radiator, fans, crossmember and other bits you'll need to do the conversion...

all in all a conversion will cost approx $6-7k to do it correctly.

good luck
Actually, one of the guys here in Detroit has a 2001 RS with a 2002 WRX conversion using the stock RS tranny. Seems to be holding up well so far.

There are always hardened gearsets if the need arises. I actually prefer the RS ratios to that of the WRX.
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