Pulled an 8.8 at the junkyard recently. Never done much work on rear ends but the goal with my car is to build it all myself. Planning on doing a strange spool, 35 spline axles, c clip eliminators, etc. Pulled the diff cover off this evening to drain the oil and start disassembling. Gears have very minimal wear and everything spins nicely with no binding or excess noise. As I got to looking I noticed where the diff/shims connect to the housing there are some holes in the metal that are pretty fragile. Hoping someone can give me some advice on this. Are these holes going to cause issues long term? This project is going to be a weekend car with a few trips to the drag strip every year. End power goal is 600-700hp.