Serpent envy, I've been doing some research on a 351W budget-based stroker. I know we have supporting vendors here and crate motors too, but since you asked, I'll share this ad I found on CL for a 408W stroker build. It's not a 427W, but is probably still more than is needed to scoot my roadster down the road.
I visited this shop last Saturday here in Phoenix and believe I'm going to pull the trigger with him very soon.
351 / 408 WINDSOR STROKER ENGINE W/ ALUMINUM HEADS***
HTH,
Will