My combo once it's done and ready I will be running a 69 1/2 dana b-body rear end (4.10s) on my 71 dodge challenger. I bought the dr diff offset springs and shackles (1" I think, I'd have to check to confirm) and I will be buying his disc brake combo as well. Dr diff told me I can run a 15x10 (5.5 backspacing) wheel with a 28x12R15 MT S/R (Sounds like he knew quite a few others running this combo because he was quick to suggest it and sounded very knowledgeable). So my question is, is anyone else running this combo, if so pics please. And what springs would you suggest +1/+2 espo or something else? My car will be a street/track car, so I would like a setup that should do decent at the track but not kill me during street driving lol.