Thats a beautiful car. Mine was a 68 Mustang coupe also. My dad still has it. I started building it when I was 17 and finished it on my 19th birthday. When I got ready to sell it to get a chassised 68 Vette my dad bought it from me and has had it in his garage ever since. 15 years ago. I still love that car and combo. My engine combos were probably similiar to yours if theres anything I can do let me know. I'd love to help! I ran two 660 center squirters.