Re: 53 3100 - complete rebuild and upgrade . . . .
Here you go dsraven; a little weight reduction. Started at 3/4", now 0.550". Lots to go, this is just the start of course but I'm happy this far.
I re- read your question; the closest the headers are to the boxed frame is about 1/4" by the starter.
More later -
Dan
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