thanks man I pappreciate the offer

. Fortunately tho I was able to find one locally this morning at a turbo shop - they had a couple lying around and I got it for cheap. Also sourced the steel gasket at my local Kenworth dealership Cummins #3535001. I still don't know what the original application is for this plate - maybe early 12v 2nd gen?
Here's what the parts look like -
So now it's time to clean everything up, bolt it all together, and see how the beastie runs afterwards
- Sam
"...there's always a way".
'78 W950 Power Wagon "Bud"
'85 W350 Crew "Big Mack"