If I were choosing one of the straight 6 engines to swap into my ti, I would personally try to find an aluminum block M52 from a z3. While an S52 would be awesome, they are usually considerably more expensive. Plus, there are plenty of mods that can be done to the M52 to get more power. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM |