I have a 1999 OBS Silverado 1500 which had a Vortec 5.7 and Im about 6.0 swap it and just about ready to drop in the new motor. Im using Trans Dapt 4572 adapter plates and I have heard of people having issues with the triangle shape hump on the back side of the clamshell mount hitting the adapter plate. Im at that point now as well and one washer between the two wasn't enough as seen below.



So I added 2 washers and it will bolt up completely. My question is will having 2 washers between the plate and clamshell give me problems when I go to bolt the motor up? I considered cutting a hole in the plates for clearance but wanted to see how you all used the Trans Dapt 4572 first. Here's how its sitting as of now. Thanks