I am in the process of doing this on my 71, it is a tight fit, a real tight fit. Also the clutch line and the brake line have to be rerouted, plus the positive battery wire had to have an extension soldered onto it, plus a new hole for the air-conditioner condensate drain. And I still haven't decided how I'm going to cover the cut hole, but I suspect I will mold a fiberglass cover for it.
Would I do it again, I'm not sure. I don't think a lot of space is gained especially since so much space is eaten up by the chassis brace.
Good luck
Nazgul
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