This winter I am planning doing some upgrades to the car. I am wanting to put a 10" rim on it and a 295 drag radial on it. Currently I am running a 28x10.5 ET Drag on a 15x8 with 4" of backspacing. The frame is going to get a full notch and I wasn't sure what offset I would need. The rear is a stock width Moser 9". Thanks for the help.