J45,
I'd like to see the photo of the 392 headed 151 Iron Duke. I did my Hemi headed Duke with a 1957 Desoto 345 head as the bore center spacing was better. 2.0" intakes, 1.75" exhausts, Edelbrock Fiero TBI intake with adapted 32/36 DGAV Weber, BW T50 5-spd, 3.42 rear, sleeved to 3.875" bore, stroked to 3.6" with MM crank, 292 rods, all in a 1978 Sunbird wagon. 40mpg highway, 20-25mpg city, '78 EPA compliant without Cat, air-pump, etc. And best of all it devoured V-6 H-bodies and even some 305 Spyders. Drove it 20,000 miles in two years here in Denver with no major mechanical problems.
Have you seen Nick Arias's two aluminum Hemi Super Duty 4-Bangers? Thanks in Advance, kalklein.