Rear Frame Rot

I was crawling under my car the other day and noticed a piece of the undercoating hanging down. Pulled on it and voila - it was hiding a rusted out frame between the rear shackle bolt and the bumper. Starting to sweat a little by now I looked at the other side. Even worse!:( Someone had put a mickey mouse patch on the frame and hid it with undercoat tar.

So, does anybody know where I can get some patch frame pieces? I understand that this is a common problem.

Who does this kind of work? Alignment shops? Body shops?

Thanks.
Jim S.

Chevy II Only sells some nice pieces.

Part# 100014 Year 1962-1967 Price 59.95
Description REAR FRAME RAIL REPAIR SECTION Pkg EACH Core Chg 0.00
Details NOVA NOTE:
10 INCH LONG WITH REAR SHACKLE MOUNT, FITS LH OR RH
THIS PART IS DESIGNED SO YOU CAN REPAIR AN EXISTING REAR FRAME RAIL THAT IS DAMAGED OR RUSTED.
REMOVE THE DEFECTIVE PART OF THE REAR FRAME RAIL LEAVING ENOUGH OF THE GOOD ORIGINAL FRAME RAIL TO WELD THIS REPLACEMENT SECTION TO. Qty Add to Cart