I would like to add a set of cheater slicks to my Copo with the dog dish hubcaps,for the day 2 look and I will be running it at the track as well. wheel vintiques has either 15x7 or 15x8 with a 4.25 inch back spacing, I am looking at the m&h cheater slicks that are 26x10.5/15. Does anybody know if they will fit without cutting? Will the 15x8 work or do I need the 15x7?? I think the exhaust will be more of an issue than anything?