I'm trying to find out if the manifolds used on V8 like 85-92 Camaro and Firebird are both the same as used on some like 1983-1986 Chevy pickups. Rock Auto shows me the right side interchanges between the two, but there's no listing for the left for the truck. The only difference I can see is the TPI Camaro has a port for an O2 sensor, the pickup wouldn't have. This type of manifold comes up from the exhaust ports, the right dumps at the rear, the left between the middle and rear ports. It's possible they're the same thing except for the O2 port, so one has a different part number or casting number, and that's why I'm not seeing them as interchanging. The key is if the outlet is in the same position and location. Right now it's looking like I may have to hit the junkyards and hope I find examples of both cars in one place - but the odds are against that, not a lot of those F-bodys in the yards here. I need to know because I may have to go hunting for a set for my '50 Fleetline. I'm finding that with the '89 Suburban manifolds from the motor I have half installed in it, which drop down from the ports and dump more or less the same as the Camaro type, if I raise the rear of the trans so the manifold clears the pitman arm on the stock steering, then the trans is touching the trans tunnel. If I lower it 1/2" or so so there's at least some clearance at the tunnel, then the manifold is sitting on the pitman arm. A set that comes up will solve the clearance problem - if it's a set I can buy a prefab Y-pipe to do my own exhaust with, then I'm in good shape. There is one for the Camaro but it twists and turns and I don't think will work; the one for the pickups is simple and looks like it will work great. Mechanically I want this thing to be as close to the Suburban I took apart as possible, just to save any hassles driving the car and finding parts. It's either this, or try and see if a reverse Astro steering box will give me more clearance, or put a Jag front end on it, but the simpler it is to fix this, the sooner I can drive the car.