Wow, way more info than I had anticipated...thanks! The one thing I'm still unsure of is the intake port size variance...or lack thereof. Like I mentioned, the Tattersfield matched right up to the Edelbrock ports (and I know the Edelbrock is a 235 version). I mic'd both and got the same size (don't have that exact number handy). However, I did not bother to compare exhaust manifold patterns, but will tonight. If used, I plan on running 216 carbs (hence my post in the Wanted section), or restoring my ancient Carters and making a nice wall sconce!