I just did the swap on my 67 it was ohc6 one barrel, it was pretty easy to do, just got the v8 frame mounts bolted right in no issues at all, also if you are goin to change transmissions you might need a new cross member I put a 200 4r overdrive trans in mine and bought a cross member from bowtie Industries for a 67 Camaro and it works perfectly!! As for wiring I went to hei ignition and it's very easy setup also and didn't need a wiring harness, just had to re route some wires pretty basic and easy to do tho, my only issue is my headers won't fit because my car is a column shift car and the linkage in right in the way of the left side header so I'm switching to a floor shift, also doin power disk brake conversion and competition engineering traction bars because my car didn't come factory with any torque arms on my rear end, here are some pictures of the swap, out with the old and in with the new!!