wwmjg

The rear discs are a good score - those basically bolt on. There is no advantage to using any of the fuel/ignition system from the '85 - it's not at all compatible with the SPFI on the '88. Head gaskets are not a bad idea at that mileage - should definitely have the heads resurfaced as they will probably have some pitting near the bottom edges of the fire rings. Check the block surfaces carefully and have the block resurfaced if it's suspect.

GD