I agree 100% on long branch manifolds for a street car, or anything under 500hp. On my previous mild 455, it dyno at 400hp with RAM manifolds and 409 with full length headers. That 9hp is not worth the trouble in my book!

For my strip car, I plan to purchase the headman 1.75" headers, not coated. Once I confirm the fit and clearance, will send in to someone like Jet Hot to have them coated. Supposed to be a lot better than the OEM coatings- so I have read...