59 truck rear end swap..... disc?

[59chevy310p]

Ok so I have stripped my 1959 chevy SB step side down to just a rolling frame. Have 4 inch drop axle with disc conversion 6 lug. Upgraded master cylinder for 4 way disc and 7 inch corvette booster on the frame. So now I want to upgrade to rear so I'm trying to find a rearend that I can put in that is somewhat beefy and disc I will have a chevy 5.3 with all the fuel injection. I thought of a 2000 chevy tahoe but too wide so does anyone have a idea or a direct swap they have done and liked? This truck will be a daily driver and want to drive it all over

Thanks guys look forward to your ideas