Now we're comparing header gains to an engine swap that uses current technology. I bet you dont find a modern hemi with computer,harness and all necessary pieces for the swap for anywhere near the cost of TTI headers.
For what it would cost to do all the swapping, I could build a nice engine that would perform better with headers.
Besides the O P asked about cheap headers, not TTI.
Headers are a proven provider of milage and performance gains. Feel free to not use them. Its a free world. A lot of guys dont like to improve their cars and think a carburetor designed for 70's fuels should run good today and points ignition worked fine 40 years ago.
Then there are people that dont believe in electricity either



Keith