Lug centric stresses the lugs alot. I've broke plenty offroading, never on a car though. Be sure to get good aftermarket lugs and check them regularly.
I always thought factory painted interior and exterior same color. I thought when it had a different color interior it was just the bolt on stuff like seats,dash,moldings,and panels.
Assuming that it has a tbi454, you're not going to get much better. That gen 454 is the worst BB Chevy made. It had roughly 7.5 to 1 comp and crappy peanut port heads. With hp and torque numbers as low as a typical 350 it wasn't very efficient.
My 91 c3500 got 9.5 on flat ground at 55-60mph...
They do list them... they take a 5 on 4" pattern and make it a 5 on 5" pattern
Although I can't see why any most guys here would want 5" I'd think they would want 4.5".
If both tires are exactly the same diameter and pressure, and you are going dead nuts straight, the spider gears shouldn't be turning.
EDIT.... I have an idea for a test..... with the wheels bolted on, jack 1 rear tire off the ground , the other tire on the ground and chocked. Put the trans...
Don't sound right to me. My Detroit Locker doesn't even sound that bad when ratcheting.
Pull both brake drums and spin it again just to be sure it's not anything with the brakes, but to me it sounds like something is starting to let go.
Oh, and if you have a hot glue gun, you can put some glue on the wire connection after it's soldered. When you heat the shrink tubing it'll melt the glue and get the same end result. This is how we used to do it on boats when we couldn't get get the marine grade stuff from our supplier.
http://m.harborfreight.com/42-piece-marine-heat-shrink-tubing-67598.html?utm_referrer=direct%2Fnot%20provided
Here it is at harbor freight, or you can just search for marine grade heat shrink tube....
Vacuum leak or throttle cable holding carb open. Would be my first guesses.
Check cable first. If not it, spray carb cleaner around carb and listen for an idle change. Most likely to be a vacuum line left unplugged, or carb base gasket not on correctly.