I've built a 484 C.I. wedge that was a 426 street wedge block, 4.320 bore with a 4.25 stroke crank. The 383 piston, with the right length long rod( I would use 6.7 H beam
), will be a lot lighter than the 426 stroker pistons are
That combination, with good heads and cam, will work really well
Just not as good as the bigger C.I. stroker motors will with the same parts, no replacement for displacement