I would go with the boyeesen dual stage reeds. Also if you are going to rebulid your crank, which it sounds like you are going to do, use the 87-92 rod. It will make it into a "Long rod" motor. I can give you more info on what to do for that. It will give you more torque. I had an AAEN pipe on my 86 LT I had years ago. By far the best pipe for that year. I called AAEN some time ago and they said that they still had the templates to make this pipe. however you had to pay for the pipe in advance. If I remember it was around $250. I am currently running a DG pipe, which I think sucks for the power potential . You won't be getting a 1,000 h.p. out of this design motor but you can get some gains that are definitely noticable.