The 60 series tires should not be a problem for that frame. It depends on the rim with and backspacing and the width of the rearend he uses. He may have to add wheel tubs. With the proper choice of front ends you can get it as low as you want it. That would be the easiest way to do it.
Robert C.
If it's true what they say, "You learn from your mistakes,"
I'm a Genius in the making.
1950 3600 
