Mine was the typical stock engine with a big turbo on it and It didn’t last long at all, it wasn’t a huge failure it was just little signs things weren’t right, I thought it had just blown the head gasket and when I got the head off it had cracked between the head bolt hole and the coolant jackets in a few spots.
I also kinda think the issues may have already been there before I put the 6466 on and it made them more obvious.
The braces probably werent around when you built your engine, people were only grout filling and hoping for the best, I’ve gone billet block for my new engine