3.9 into K-frme

I just Purchased a 2001 Dakota for the driveline. I want to drop it into my 74 dart sport but the oil pan looks like it is going to hit the factory K-frame. I want to upgrade to the QA1 anyway so does anyone know if the oil pan will fit into the tubular K-frame. the truck isn't moving anytime soon with all the snow around it and more to come, but the dart is in the garage and I can do the swap now if I can be assured it would fit. I wanted fuel injection and good gas mileage and the v6 fits the bill. I just can't find a pan that fits cars.