If you do find a matched set, they run nice. I've got a matched pair of 216 YF's on an Edelbrock manifold on my 216 and I've been real happy with it. Runs real good with no hesitation or lag whatsoever.

But I'm going to be switching manifold and carbs soon. I've run this setup for about 4 years now and it's time for a change. I've got a Weiand manifold and will be running a pair of Carter W-1's, #574s. I like to fiddle with things so I'll see how this setup works.

Bob