For 85rckyboby, my suggestions are different between a Foxbody and an SN, because they are two different headers, so this doesn't apply to your car. I always think longtubes are a good investment, even with stock heads. I would do the
BBK 1519 header which is a 1 and 5/8." I have never had a set of Mac headers that fit right or didn't eventually warp. You have to bend the EGR tube a little to get them to fit. You can still run the ProChamber, you just have to bend it a little. Last time I did a set of 1519s I had to bend the BBK X-pipe to fit anyway. You also have to adjust where the AC liquid line mounts to the inner fender or the headers will melt it. It's an easy mod.
Kurt