It seems like a decent price, I would say that you'll know within a month if youre gonna like it. If not, like you said just swap out the rear axles. At work we have all chevy's from 2500's up to 7500's. I have my own 1500. All in total thats 5 chevy's I am affiliated with and the only thing I can say bad about them is that they don't plow snow worth a lick unless you have about a ton of weight in the box. That's no concern of yours though (you lucky devil) I would say buy it.