Here are some shops around Houston:
*Call midnight 832-721-7727 (he's a guys who knows toyota's) tell him jhbhatia from houston imports referred you!
*there's a place called toyota parts on 59 just north of the chimney rock..althought they sell parts..but i heard a rumor about them making the fastest turbo tercel in houston or n. america...don't remember....
*hyper racing 713 910 4677 (the owner of hyper i think has a mr2 project car with a 3sg motor).
*ARD (713) 984 - 9140 ; located at beltway 8 @ hammerly - ask for Owen or Jody.
I think these are your best of the best for toyota in Houston...If we were honda...then the list would be a few pages.....Anyhow...Good luck with your project, keep us posted...and don't act like noobie when you call them and tell them i gave the number...(don't make me look bad now)..j/k!
EDIT: If you go ahead to do something with any of these guys...let me know...may i'll pull my car..and actually go ahead with the conversion..and well....this way we both can have a 2 for 1 discount....BTW: I'm referring to my celica, not my solara!