Got a similar 440 in my `71 Bee.
The letter with instructions was signed by Kenny. Should be the same builder logan426 mentioned. He called it Street/Strip engine.
Build in `94, 30over, 9,8:1CR,6-pack pistons with reliefs, worked 452 Heads, Mopar 509, Holley SD etc. Nothing spectacular, but it seems he pretty much knew what he was doing. Was abused a lot and I overreved it a couple of times, when my Splap-Stick skiped D and rushed directly to N, in the heat of the moment
. Anyways, still runs strong and seems to be a quality build.
Greetz Arnd