I use 7/16" wheel studs to replace the intermediate mount threads that were stripped. I had to cut the old stud out and using a angle grinder and Dremel. I thought I will be able to knock the bolt out of the hole after cutting the head off the stud but I thought wrong. I had to used a drill to get the rest of it out.

Years ago I welded a gusset to the left intermediate mount when it started to cracking in the corner of the bend. The 3/8" flat stock spacer was used to prevent my old set of headers from resting on the shock towers. This spacer also helped in getting the center link off the starter.

I had to open up one of the bolt holes on the left side mount to keep the new replacement mount flat and from pressing on the block. This could have pushed the corner of the motor mount into the block and busted a hole in the block when tightening the bolt.