There isent really anything wrong with it I dont think. It has 146,000 on it. So he wants to build it up. Would the 383 be the best way to go?
Do a leak-down test on the stock shortblock to see if the rings are in good shape.
If it comes back good, you can save yourself money by leaving it alone.
As mentioned above, the extra displacement is a waste without a good top end to compliment it.
Ok. were is a good place to get a stroker kit? and a .40 over kit? so I can price them both out for him.
Callies makes an excellent kit at a reasonable price. But expect to spend $2000-2400 on a forged rotating assembly alone.
(as I mentioned above, no reason to go cast)
I used an Eagle forged assembly for my 383 build, the parts along cost $1850.
Either way, you'll also need bearings, fluids, gaskets, balancing labor ($175+) and precision assembly.
That will erode your entire budget very quickly.