I have decided that my 1966 F100 will be getting a GM engine.S

Only it will not be an LS or LT. It will be getting the Vortec 4200 I6. Turbo'd down the road but NA at first. I wanted to keep it an I6 truck, it currently has a Ford 300 in it and while it is a good engine I want something newer and more powerful with lots of potential. And since the last I6 Ford made was given to the Aussies I had to look elsewhere. Could I have one imported? Sure. But I also want to be able to get parts easy, so the GM 4200 LL8 it is. And it will be backed by a T56. A fun project sits ahead of me.