Learned this from a friend... found it funny... and lame....
You can use a small block Ford Torque plate to hone an LS bore.
You can bolt LS heads to a small block ford. The bore centers are only about .020 different.
Firing order on the LS is Ford
Symetricial ports just like Ford
You can actually install a different timing chain cover and install a conventional dist in the front...just like a ford.
SO basically GM just put 15 deg heads on a small block ford V8 and made power with them...