cornfuzed

i am looking in to buying an 82 xj650 turbo tomarrow and was wondering if anyone has any experence with it or any of the other 80's turbo bikes
also from what i have read the biggest reason the turbos wear out is compressor surge due to the lack of a bov, how hard would it be to add one?
also there is no innercooler and it's air cooled how hard would it be to find a small enough ic and mounting it?

also dose anybody know of a slightly larger turbo than the stocker (i believe i read the impeller only measures like 31-35mm but it spins to like 210k rpm)


it needs carb work tho if anyone knows where i can get a jet kit that would be awsome