what do you think my dart will run.

Hey Dave, do you have frame connectors? I am just getting mine back together, and had my rear housing shortened 1.5 inches and ordered 8in. rims with 4.75in back space and tested a Mickey ET drag radial 275/50/15 and it was a bit tight. I also put a RMS tri 4 link in it and was able to adjust the side to side clearance to equalize the spacing, and still to tight. The original housing seamed to be strong to the passenger side, I was told this was common. Anyway, I ordered a set of Micky 255/60/15 and I know they will fit no problem, awaiting back order on them.