25 to 30 grand if you have a Shelby motor built by a top of the line shop with all the good stuff. I think you will find thats a pretty typical dollar amount. KC, Gessford, Boghosian (
), builders of that caliber. They are others who will do it cheaper, with more risk of getting it right. That Eleanor Mustang with the leaking rear main comes to mind, but heck even THAT guy spent over $30K!
BIG savings can be had by sourcing the various parts here and there, when on sale, making a deal, finding the right stuff at the right price. It takes time and effort AND a good knowledge of what your looking for! Most folks are well advised to let their builder source the parts and do it "his way".
I sourced all my parts from Gessford, paid a little more for some things, about the same for others. The ADVICE that came with the parts was invaluable, I was GLAD to source it all from George just to get that! My pistons were pushing $1,000 by the time I had them in the engine (rings, pin's, special order piston pin height, dished to my spec's, etc.). I could have saved a bundle buying "off the shelf" ready to run pistons.
Solid roller cams have a limited life span on the street. All though some progress has been made with special (BIG dollar)
oil pressure fed rollers it's still to "iffy" for me to go there again. Not to mention the on going issues with dist drive gears, bronze, fiber, steel, what??? Even the manufacturers seem to be struggling with that issue, STILL. I would say, 8 to 10,000 miles and replace the rollers, IF you get that far before your cam eats one. Keep the idle rpm high, blip the throttle on occasion to 2,000 grand rpm or so when sitting at a stop light (keeps 'em oiled). It's tough to make 'em live but it can be done. Windage tray might cut the
oil sling to the cam/lifter area, possibly starving them for
oil at typical street rpm's.
I spent about $4,000 on parts when I rebuilt mine. Most of my internals and the heads were good already. It was more like a "re-fresh".