to use these rims and this BS wuld i need to run drag tires?

I was able to fit a 275/60-15 on an 8 inch rim with 4.25 backspacing under my Dart without moving anything. I`m certain you`ll have to move your springs to fit a 10" rim in the wheelwell without hitting anything. There are several drag tires available that measure in the 10 x 28 x 15 range, (similar to a 275/60-15). You could use something like this if you don`t want to start moving springs.