Pistons

I ran forged Wiseco pistons in my stock stroke 400. They were 4.375" bore, and it was running stock length Eagle rods and stock stroke factory 383 crankshaft. Ran really well and loved nitrous. You just need to call any piston manufacturer and ask what they can do. If it's not currently available off the shelf, most of them have something close and will adjust the compression height for a nominal fee to fit your application.