Quote Originally Posted by scttydb411
assuming the chassis wiring is still the obd1 then use an obd1 p75. the other option is a obd1 socketed/chipped ecu, but if the ls motor you're dropping in is close to stock specs (inj, compression, etc) then just use the p75.
OBd1 P75 or the PR4 obd1 that green91 mentiond.