68 Cuda 383 vs a 360

Hold up, last I knew 426 was the max you could go with a 383? (which brought much more appeal, for me, to the effectively small block 383) Who has a kit for this? Or is it a piecemeal operation?
Muscle Motors had the 450 CI kit for the 383, they are no longer.
If I was going to build a 383 stroker I'd do a 451
3.915 stroke (2.200 journals) 6.700 rods & 1.32 flat tops, 4.280 bore. Dress it up like a sticker.
Use stealth heads, painted engine color.
That was their 450 kit. they had the 450 and 496 kit for the 383.