Will 383 pistons work in a 426 Wedge ?

No stroker kits for a 426W? Then look for a forged 383 piston around 1.88 c.h. (or less) 383 flattop at 1.88 might be a bit too much compression for pump gas.
At $1000 for a cast or hyper for a 426, I'd definitely start looking for an alternate route.