I have been out of Buicks for 19 years and am just getting back in. My previous Buick was a 69 skylark GS convertible. It had a NOM 350 in it and a 2:56 rear axle. I built a mild 455 for it. I used a factory replacement block, 1971 heads, an 800 CFM Q-jet, a 268 duration comp cam, Rhodes lifters, MT repro headers and an edelbrock performer intake. I was pleased with the power output. I ground down the governor weights on the Trans to raise the shift points on the TH400. The 2.56 rear end was a bummer on the strip but offered 19 mpg in a car with a passing gear that pulled like a freight train. The late 1980’s were fun for me. At the time TA performance was the only game in town, Poston was just starting up. from what I gather now Poston is long gone. Fast forward to 2012. I am recently reemployed after being out of work for 3 years. I used to work in automotive engineering doing computer aided design. I work in computer aided design but make 2/3’s of my previous wage. My build budget is nonexistent. I am now an old man and a first time father of a young son. I want to build an engine with him. We picked up a 75 LeSabre convertible at a good price. We picked up a 430 motor to build for it. The car will never see a drag strip, and I don’t like buying tires so no holeshots. I do however drive fast and like to pass people. I picked up another comp cams 268 duration cam at a discount. I plan on doing a very restrained port job (blending the valve guide boss), and polish the combustion chamber. To my questions, first is exhaust. My motor did not come with exhaust manifolds. Headers are expensive, and I am not seeing any deals on used ones, but it seems criminal to PAY for stock manifolds although I am sure I can find some cheep. (rather put money towards headers) Are big block manifolds the same? Is there any year that flow better than another? If I look for used headers are there any brands to stay away from? I am a decent welder and can repair just about any damage, but building them from scratch seems like way too much work. Next question intake. Given my cam choice and the essentially stock heads is there much of a difference between a stock cast iron intake and an edelbrock B4B? (I assume there are no other dual plane manifolds out there). I would prefer imperial data, (IE dyno results) over a bench racing WAG. Is there anything that can be done to a 430 intake to improve it? is port matching really worth the effort? I do have much more time than money but little of each.