Hi Hal, ok this is what I found:
My 67 car with the 283 has the “tall” mounts, roughly 2 3/4 height
The ‘66 Caprice with 396 mounts I have are the same height
The ‘67 impala 396 mounts I have are shorter, maybe 2 1/4 to 2 1/2 “ height
So I guess both tall and short mounts were used with big blocks
If you need a set of tall mounts I would part with them, but your 67 might already have the tall ones?
Also, are you planning on selling the 327 engine?
Tim