to get a built motor, you could call SGP. They could set you up with a built short block, you pick the internals. As for the heads, your cores may still be good as long as they are not warped, and your turbos may be able to be re-built as long as the housings are not cracked.
Fred 95 300TT SGP Stage..Who knows..lol Dynoed 539.4 RWHP, 481.2 Lbs. Torque Pump Gas @ 17 Lbs. of Boost NO NOS!!