[joe_padavano]

Originally Posted by 7244too

Also, did you get the motor mount pads off of the frame itself? It's not really a necessity unless your planning on going the W-30 look-a-like route. The 455 will sit just a little higher on the 350 pads.

NOOOOOOO!!!!!!

(Can we get the little head-banging-a-brick-wall smilie that they have over at OP?)

Once (yet) again: When used as a matched set (350 frame mounts with 350 motor mounts or 455 frame mounts with 455 motor mounts) EITHER BBO or SBO will sit with the crank centerline in EXACTLY the same place.

OK, I'll breathe now.