My origanal plans where to do an ITR swap into my sol and basicly leave that in stock form. With a swap, that puts me in street Mod in auto X. In the rule book, Street mod says that engine is basicly unrestricted, as long as displacement is under 6 liters NA or 2L turbo. It does not have any rules against tubos other then the displacement one. What I was thinking, an LS turbo would still have me be racing the same cars as an ITR powered sol and together would cost about the same. So what do you think would be better? If I got the LS turbo, I would just put a small turbo in it. However, autoX=rev happy so I would have to build up the head and also, put new rod bolts in the bottom end. So what does everyone recommend?