Back when I was involved with FAST as the Tech Director I had a 72 Duster that I was planning a 433" (4.1 x 4.1) 340 TQ/904 that I thought had the capabilities to go inthe 10's (this was about a year before Wayne hit Stride with the Vette (the next year in fact) and I think I was trying to convince Dave into switching to an Auto).

I thought with enough port work to the intake and the Head (I've worked plenty of X's and J's) an A body could dip into the 10's with the right air. the issue for me was with more stroke and a few FAST legal traction tricks it could work provided we could overcome the small 14" E-70 footprint of the FAST legal tire. I knew a hidden stutter box could kill the low end until we got rolling but keeping the tire planted while big torque rolled in was always the quandry. Plus the fact that at the time I was the Tech guy so I had to put my plans on the shelf and remain unbiased.

I thought a 433" motor with a 6.25" rod, a 2.055 or 5/16 stem 2.08 intake and a moon pie slug would be the best way to squeeze the last bit of power up top where the wedge head would have a hard time keeping up with the hemis and canted valve motors.

The cam is tricky, you gotta ET by maximizing the torque in the middle 'cause you can't use it all off the line and your big end is limited by the intake and the shorty-short rod ratio will start to lay off the cylinder pressure at high piston speeds.

I've been following you and your car very closely, I believe we met before you went to the 416