find urself a decent mileage turbo...doing the na to turbo swap is time consuming and costly.....if u have a mechanic that u can trust...have them look over any potential car(s) that ur interested in...have u registered on the main board??....
www.mr2oc.com
u can check in the regional forums for any local cars for sale within ur area....or u can check out
www.xcars.com for used cars....u can also check with the local mr2 group closest to urself n ask one of the members to help u look over a car for u...u'll find the mr2 community to be somewhat close knit and helpful to one another.....good luck with ur search.....