I'm looking for an FMIC for my 89' TII with a BNR stage II right now and Greddy seems to have some reasonably priced kits. Whats the difference between the V-spec and R-spec ones that makes the one $75 extra? Also which one would be the best for my application (Stage II BNR).

 

The R spec is designed to fit with the greddy turbo kit upgrade. Go with the V spec unless you want to cut some piping to make the R spec fit.

 

The 24R Spec also has a slightly different fin design internally that supports more horsepower.