Hi Dale; I was hoping to get in touch with you. I'm an old buddy of Mike Morgan's, and I've been talking with him a little bit on this subject.
I checked out the straight axle kits from Speedway Automotive and will probably go with something like that instead of using an A100 van axle. (I have minimal fab experience) I'd like to keep my wheelbase pretty much stock, and plan on keeping the headers inside the frame rails. I have a new MP Disc Brake kit that I bought previously to deciding to go with a straight axle. I'd like to be able to use it (being that I've had it new in the box for so long now; I probably couldn't return it.) The thing I'm wondering is what spindles I would need to be able to use those disc brakes? (They are conversions for the stock slant 6 car)
Also; I'm wondering about clearance for the oil pan if I don't move the axle forward? I assume I would use my stock K frame for the steering box and motor mounts? By the way; I have your DVD for building an altered wheelbase car; but I don't know if it would work positioning the axle in more of a stock fore/aft location.