It's bee a few years since I put a T5 behind my 270. I used one from an S10. The only pluses for the S10 version are OD, which they all have, and shifter location. I wouldn't use the S10 again even though mine has WC innards. The stock shifter itself is a sloppy mess and needs work. In your application I'm not sure the shifter is an issue. The V8/V6 world class should bolt right up to a 250 bell housing. If you have to relocate the shifter use the links above to put an S10 tail housing on. Read all you can find before you buy parts. Do a search on the
H.A.M.B. also. Beater
