Perfect engine mount kit yes!
I agree I would use a Q jet if possible but here’s my advice. Contact this company, tell Mark that Sean Buick sent you and explain your engine combo. He will build you a custom Q jet to bolt on and enjoy. He’s setup a family shop with his son Tyler and his daughters as an assembly line of precise carb builders! I’ve known him for 20 years and he’s a great guy.
Quadrajet service, parts, kits, restored originals
quadrajetpower.com
The Q jet in proper form is the best most precise carb available to this day. Smaller primaries For efficiency at low throttle and cruising and huge primaries when you drop the hammer! These carbs are CFM on demand, you can’t overcarb an engine when you use one. My old 88 4.3 astrovan had a 750 CFM Q jet and I’m sure it only swallowed 350 CFM as needed. Amazing carbs but dont dare let a shade tree mechanic touch one it will never be the same again. They are complicated, precise and amazing when built and set properly. I’ve got 4 on the shelf, all pro built my Mark or another guy I trust named “everyday performance”, he’s an engineer that does carbs as a hobby. Use the electric choke kit they both offer.
I only stopped using Q jets as I was adding turbo boost so the CSU Holley carbs became my go to.