One of the things I'd wondered about was that bit near the grill. These lights have a lot of rake to 'em, and I'd sorta seen the edges of the grill blocking things. That's boo-coo interesting about the need to widen the fenders, though. Ouch.
I've still got to send him the $$$, but I've cut a deal to buy a '71 GT shell from Mac Townsend in CA. The car's going to sit in Nevada for a bit - my mom lives south of Carson City - but I figure next summer the missus and I'll tow it back East. The plan is to do a V6 conversion, and one of the things I was eyeing was this change. Back to the ol' drawing board....