Updated SPITFIRE HEADER INSTALL 63-66 A-body

Your welcome Dave, The shop who did my pipes spent most of the morning getting the drivers side pipe to transition through that area properly, the rest of the job was quick by comparison. I mocked up the collector flange orientation for both headers and then had them welded (never thought about a slip joint collector). I can’t get to the bolt heads on the drivers side, from under the car, at all. Removing those bolts requires a second person on top with a very long extension. I rarely have that luxury and manage on my own. Passenger side is accessible from bottom if the orientation positions one bolt towards the rear of the car. I used ARP stainless steel studs on the four corners of the heads , like stock manifold used but had make some shorter to get the headers in and out. The passenger side of the transmission mount must be “hogged out” so that pipe can route through straight, you probable already know that from your TTI installation. The only other area that was a problem was stabilizing the passenger pipe by the gas tank, so it doesn’t rattle.
Good Luck