Crank Journal Size: Mopar Versus Chevy

Yeah, I realize that. That's part of my whole argument. That's a lot of machine work to pay for, unless you go with something off the shelf.
Where have you seen Mopar sized journals cranks cheaper than Chevy sized? When I bought my 4.00” crank they were the same price. I don’t recall the small block 4.125 or 4.250” cranks being available with Mopar sized rod journals.