Yeah and especially if you go with four links and coil overs, etc. When you weld your rear end up, don't weld too much in one spot. A friend of mine did this on his 56 Chevy and found out that the rear end was messed up, bent and the axles tweaked and had to get a whole new one because whoever welded in the brackets didn't do it right, got it too hot and ruined something that was a ton of money mostly because they weren't patient I am sure.
I wish I had the Knowledge that Dave does at building a frame. I would love to be able to build my own front ends and frames.