My original plan was to use my stock manifolds, and have them "extrude honed" for better flow. I was gonna do the intake/heads & Manis. Unfortunately, I have yet to win the Lottery!
This is about the average price. I went w/Pacesetter headers. The kit did not have all the bolts, however they did overnight a complete set, overnight, gratis! I had to run a mini starter. and still had a tight fit on the passenger side, rear cylinder. I didn't have to crush/squeeze or do anything to impede the flow, just a PITA to mount.
If there is a part that is manufactured slightly out of tolerance, it is shipped directly to ME!