y dont u stuff those type r pistons in the ls bottom end n get some arp rod bolts. u can do ls vtec that way n run that b16 head. the block wont even have to come out of the car. s80 is a gsr tranny. and i think u need to run the obd1 dizzy on the obd1 head. i think the dizzys have to be the same, but u can always get a conversion harness. gl n hope this helped.