Mopar 350 Stroker

they been cuttin' the mains down on 360 cranks for 340's since jesus was a private.

the chubby rods are a cheap and easy work around to expensive custom rods for the application.

sounds like that engine was spec built for a specific class. be careful trying to replicate it exactly, you may wind up down a rabbit hole-- especially if you don't have the critical components like the crank and top end-- at times, a lot of that stuff was one off custom work.