take a look at the 68 Barracuda thread. We ran into the same issue, only worse. We cut the old out and welded in new and then we fibreglassed them. I think its best if you get whole new floor pans, then you know its all good.
Street with some mods. 360 ci engine, bored out to put out about 400 hp. 8 3/4 rear end for the old girl. Tranny OK for that.
New interior and modern sound system to be installed. Foose Rims & Dunlop tires for show and some 70's era mags with 50 series tires on the rear for fun and 70's on the...