brian youll probably find a t3/to4e somewhere but i dont know how common they are with those specs you want.

try www.turbonetics.com i think and www.garrett.com or garrettturbos.com ill have to check on the garrett addy.

also the majestic turbo site i dont know the addy to that either.

itsp robably cheaper to make sure you get a new turbo or at least a rebuilt with the correct housings and trims and a/rs that you need. probably can find one like that for cheaper. maybe 500-600