Well, thought I'd update this since it now runs! Not a ball of fire... just your typical 2.8L - thankfully the manual helps. Other than giving it the 91 Blazer's old 3.42 gears, just basically did gaskets, tune-up, exhaust, clutch and removed a load of emissons BS...
Got it on the road last week... here are some pics:
Gotta love these Durango Badges:
Sure hope it does better on gas than the fullsize he drives to work now!