Help ID motor. Potentially/likely canadian

I like the cast crank motors. I want one. The cranks are a good bit lighter and no way will they ever make enough power to break one. You could build one to rip up pretty quick. I'd like to find out. I've been lookin for one for a while now.
I cross drill steel crankshaft for full-time oiling. After a 150K the bearings look brand new.
You go through the rear register and weld or tap in the appropriate plug.
I also make windage trays that sandwich between the oil pan gasket.
I port and flow test the head with average numbers around 200-210 int /155 exh cfm by .500-.550 using the 1.70/1.44
Stock size valves I get around 180cfm.
Exh 135-145cfm.
I use Schneider cams for the slant stuff.
I've milled .040-.120 from the heads and or block. I usually mill .020 off the block and .040 -.080 off the head depending.
They are neat, but the mid range just isn't enough until a turbo is bolted on for them to be REAL multi purpose street strip power plants..which is fine. They were never intended to be power houses...and they only went nascar to keep with competitions econo cars..in a time where hp ruled and respect was still something you earned.
It's not the slant 6 that's the problem ...mostly, it's the people that think they are IT that are the problem. Obsessed would be a close description.
If you hit the X...it's your declaration of homosexuality.