[SRGN]

Whenever I twisted up a leaf spring 8.5, I used it as an excuse to put in a 12 bolt or 9". You need to put it in a jig to get the tubes straight, then have a good welder take care of it. The time to weld the tubes is before it's twisted up. Once you figure in labor and expenses, cost to repair gets close to a 9" that will accept your current rear brakes. You said you twisted up the driveshaft anyway, so now would be the best time to switch to a rear that's more capable of holding your power level and get the correct length driveshaft for the swap.