Disc Brake donor vs Disc Brake kit....

Is the buyer interested in the body or the whole package. Maybe sell the car without the parts you need and like you said with the 66 stuff on it. Its just a no brainer as far as I am concerned. You've got everything you need right there to do the whole conversion, including the brake lines etc - assuming the car is from CA all the hard parts will be nice. Not only this - but you would be upgrading the suspension in terms of the upper ball joints, the later A bodies used a larger ball joint that is much stronger than the early ones. I guess you need to compare the $ for the donor vs the aftermarket parts. As far as tearing it down ? 1 long day with an impact, if you dont have a compressor there are very good electric impacts as well to be had as well. Probably the worst parts to get out are the upper control arms, the pivots usually rust to the inner of the bushings, but some judicious use of force should get it done. As far as reassembly ? Maybe 1-2 days, it always takes longer.