So many choices isnt there mate lol
Didnt think that 2.5 would hang around tbh
How much power are you aiming for (for now anyway)? I agree that the MD321T performs well on the 2.5's few members i know running them including someone with 500+ bhp
If you fancy a drive in service with warranty then Alan @ ET does that. I havent researched Zen etc
Have you got the budget for a brand new build? You will need a clutch and gearbox to handle as well including injectors so it all mounts up
Not sure what you have already as dont know your spec mate