Looks nice............ I finished a set for a buddy of mine a few weeks ago on a Malibu Wagon.. Look similar to yours. His were 2-3/8" primaries. His has two tubes over the frame on both sides........Post some pics once you get them coated.......I don't think I would trust the 2X4 cross member though.......
Just to give some answers' The kit I used was by Hooker. I t came with the flanges, collectors and 8 pieces of tubing bent at all different angles.
The flanges are cut in between each cylinder and they all slip fit the collectors.
And the motor is top secret with very low compression, thats why it only needs 1 head bolt per side.
I work part time at JCP Fabrication in East Stroudsburg. If not for Jay allowing me to use his lift and equipment I'd never atempted it.
And for the local guys that asked, yes we can build you a set.