87 Manifold
You need to make a oil drain back hole at the rear of the manifold, so the stock location 84-85 turbo will fit. The 87 thermostat housing needed to be cut and mated to the longer 84 housing. The alternator bracket needed to be cut to clear the throttle body. The stock wastegate canister to big to clear the throttle cable bracket, so I used the 84 canister bracket and mounted a smaller canister into it. The plenum needed to be cut at an angle to clear the turbo housing. After you make the cut take it to a professional welder or you will warp the housing. My welder made an aluminum plate and welded it for $50.00 You need to use the 1987 throttle cable, cruise cable, throttle body, IAC, TPS, water pump S-hose, PCV valve . You have to swap the wires on the 84-85 TPS plug to match the 1987 wiring of the 1987 TPS switch. Make your own 2.5" pipes to the intercooler. I decided to use a front mount intercooler GN1 performance $660.00 and it had some pipe with the kit, so I modified them. Hope that helps. Check the pictures on Webshots.com under member MrBuick101 84 Buick GNX Clone
