I've seen them mentioned several times. Which would everyone suggest. I plan to put them on my stock '74 260. I already have the 2 1/2 pipes, just haven't bought the header yet. It's going on the E88, but will either one fit the P79, P90, P90a? Which would be better for this application? I don't care to much right now about the performance until I get the new motor which will eventually have turbo. It will be a daily driver for this winter, just because I love to drive it. Then it will go in the garage to be broke down. Thanks everyone in advance.