i used to hate all things gm too. but with age and gaining some maturity, Ive realized that GM, Chrysler, Ford, AMC.....theyre all cars, they all had some great cars and a lot of shitty ones. They all had positives and negatives. It comes down to personal preference, and I am no longer one to slam someone else because their preference is different than mine.
There is not a single musclecar EVER built that I would leave 100% stock. Every car built has something about it that doesnt sit well with me. Compound in a few decades of technological improvements making things better, and a couple of decades of parts getting scarcer and more expensive, and you end up with most people realizing the advantages of letting go of the outdated/pricey stuff and stepping into the cheaper/better built stuff.
If you want to be one of those guys who has to keep everything 100% stock, that is fine. But your opinion isnt the only one. The guys who prefer 100% stock cars are likely not the guys who enjoy driving them regularly, I imagine. 40 year old technology with it's undersized drum brakes, relative lack of machining precision, carbueration, suspensions, wiring, etc.....doesnt add up to a pleasant car for the road.
ANd if getting my car to a more enjoyable state requires that I use a part from another manufacturer, I will do it.....particularly on something as nearly universal as a rear axle. I prefer not to limit myself to inferior parts/higher priced parts/poorer parts selection, simply because I give a crap what someone else thinks.
motopsycho, by age 44, I'd have hoped youve matured enough to see things this way as well