t25??

T25's work, hell almost anything will work but I would suggest them on a SOHC engine more than the DOHC and even then I would upgrade it to a T28. I build these upgrades for the second gen DSMers looking for a little more punch without building a new manifold or spending the bucks for big upgrades, its also good for those who are realistic about what they plan on doing to the rest of the car. The T28's I build use a T3 super 60 compressor wheel and a T28 exhaust wheel, they still have the quick spool charicteristics but a little more exhaust flow and that means more power. If you got a SOHC engine it will work out but if your going with a large displacment or DOHC look toward the T3 or the TDO5 Mitsubishi you'll want the extra CFM and need the exhaust flow for horse power.