As repeated here several times. Yep notched. So long as you are using the bell housing rear mounts, I think you are cool. If you intend to eliminate the rear mounts and go to a trans cross brace, I would switch to the side mounts, due to the stresses of such a long distance between supports.I'm getting close to pulling my 235 and installing a 350. The engine has an 8 inch balancer. I want to use front motor mounts, will they need to be notched for clearance? Am I better off getting a smaller balancer?