I am getting ready to tackle my 73 Mach 1 this winter.I will be doing floor pans,quarter panels,rad support and some other misc parts.I was wondering if anyone knew of a source of a frame diagram and underhood dimemsions.It seems as though the car might have been hit in the passenger corner at one time as the shock tower brace has never fit right and there is some evidence of a previous repair so I don't trust any measurements on it now.Thanks.