Here ya go! Pic from "engine (Boss302) out" number 2,349......ok, number 2.... during my frame repair operation..and enginedectomy...trans had just come out. I thought I had a pic of my NOS "clock holder" somewhere....but can't find it.....yet....
Bummer that you are not allowed use of other period downdraft twin carbs.....
As for the 302 in our cars and revs......
1) the puny header size did NOT help at all.......these headers resemble old household heating system pipes repurposed as auto parts......
2) the heads are fine....right up to the fairly small exhaust ports. A simple "gasket match" porting job brings them a bit more to life. A full on porting job, as seen in the GT40 heads (different post somewhere on this forum....) brings them up to damned good.....no need for other heads. Some would argue that the intake valve sizing should be increased....... likely for little gain in our butt dynos.....!!! Intake ports are huge already. Combustion chambers are closed style..... 68 heads are best SBF cast iron that Ford made along with HiPo289's....which still fit in our cars. Boss 302's do NOT fit........just ask me how I know this......!!! 
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Air injection system can stay on the car with minimal HP loss (pump drag), only physical clutter. Clean up the air...... )
What was never made for our cars, was a version with larger long tubes to emulate the look of the stock headers. Several versions of larger tubes.....but they resemble typical 4-1 design. Nothing wrong with that, just little resemblance to originals. IMHO.
3) The cam was pretty mild and of no assistance. Pretty much done by 5000-5500. A HiPo 289 cam or the Ford OTC performance cam would have livened these engines up quite a bit! Something borrowed from the GT40 or Trans-Am cars would have been nice......
