cleverbob, I haven't done anything since I test-fit the Magnum intake. I changed to original thick motor mounts so clearance is iffy. My plan isn't to mod the heads, but make bent studs. This is easier on my 65 since intake holes are ~16 deg off vertical. I have only test driven the Dart (2-bbl carb). Still need to do interior and paint, plus other cars and house. I have use a 2 injector Pro-jection on my 65 Newport 383 for years, both the old and newer (2Di) control box w/ old and new TBI, usually with O2 sensor. It has always been quirky, requiring frequent knob adjustments. The 2Di box and TBI seems worse. Their last model (4D only?) added more sensors to make it work better (IAT, Pman), which carried to their Commander 950 (just renamed?). I have a plan to make a retrofit for older Pro-jection to eliminate the quirks, but not sure when I'll start that. Many Jeep off-roaders use Pro-jection.