Holley 390 4bbl on my slant 6?

I have a 66 valiant with the offy & 390 cfm-- it runs really nice in 2nd & 3rd-- can't do much in 1st (3 on the tree)-- the carb has issues & is still a vast improvement over the 1 bbl. I drove a 62 valiant for some years so I have a basis for the seat of the pants feel.

In fact the 62 started as a 170-- that was tough getting into traffic-- swapped to a 225-- great improvement (same carb nos 1bbl & exhaust 2.25")

this 390 set-up would beat the 225 easily.

do some searching there are various ways to mount the carb-- the 390 is still big-- but it works great. Lawrence