My t/a car is apart and I had the 484/284 cam in it and it behaved well with the 2bbl center.

I had also run the 508/292 on my 68 340 with a 2bbl intake for a bit of time and the manners were better.

Really not sure why I had a 2bbl on it, but even with the 2bbl it would kick the crap out of all but other mopars (early 80s where most cars just had cam/headers) 13-14 second cars street cars.

So maybe the factory 3x2 off my t/a car might work semi well.