Changing from a 8 3/4 to Dana 60 - axles?

I will be using the 8 3/4 with my SB to shake out the car. The Dana is for when I put the 540 in. The dyno shop is having to just about replace the whole dyno and I won't know until they fix it how much power the BB will make, but I sure hope it is over 550 HP.

Crackedback, I put my 8 3/4 housing on top of the Dana to see if the offset was about the same and didn't notice the difference. I'll look at the axles tonight. Yeah, I want the new rear end to be a drop in replacement, except for the driveshaft as the Dana I am looking at has a 1350 yoke.

Anyways thanks FABO. What a great source of info!