Your front wheel wells have all kinds of room for a 7.00 tire, especially on the stock 15" wheel. 7.00's are about 8 " wide. I've got 215x75x15s (almost 8 1/2" wide) on the front of my 51 and there's all kinds of room. The 7.00 tire is almost 2" taller than mine but my truck is lowered 3" and all is fine. Good luck.
Bodini