650 Holley DP instead of a Thermoquad, BUMMER

I see your running manifolds so i'll assume the engine is mild, Is it a 318 mag or 360 mag? Either or if its mild the 650dp. is all thats needed, I ran 12.5s with mine on a mild 360 stock bottom end magnum in my dart, but i had headers, Unless you get a really reliable TQ with no issues (rare) then run what you have, because once the secondaries start playin funky & inconsistant on the TQ you won't be happy.