I think that using the 'on the shelf' Poly 318 crankshafts in the 273 was a big mistake. The fix for the lighter 273 piston was to add a massive wristpin to weight the piston to the Poly 318's weight. Using a stock 10.25:1 273 piston with a light weight pin you can take about 4 pounds out of the crank.

The spin off of the 1981 Dodge Charger and the Plymouth Turismo from the 1979 Omni/Horizon was one of the better ideas of the late 1970's. The 2.2 should have been dual over head cam from the get go. If they had put the 318 in the Shelby Charger like Carrol wanted it would have been a 5.0L Mustang killer.

Bellhousing bolt patterns.... Why? Make just 1 for the 904, 727 and all stickshifts. From the /6 to the V10. Same with torqueconverters, make them all neutral balanced and do the balance with the flexplates.