Hey Just wondering if anyone is running this rim/tire combo on a factory car with no frame notch. Thinking about ordering a set of weld draglites 15X8 with a 3.5 inch backspace and looking to put 28X12.5-15 M/T et streets on a 81 malibu street car with a 9 inch rear end. will it fit? any input if it needs modifications would be great, also did you run tubes inside et streets? Thanks.