With every conversion I've seen including one that DeTomaso did for his '75 show car, the headroom inside was significantly decreased. If you are over about 5'11", I suspect this isn't gonna work out. If you ever have aspirations of driving your Pantera fast or on rough (that is, real) roads, I suspect it isn't going to be to your liking as chassis shake will really screw up handling unless you add hundreds of pounds of bracing, as Pavesi did in Italy, or Hall did in So-Cal. Chopping holes in a monococque is forever, so think a long time before you pay "Sawzall-Joe" to ravish your classic coupe. Personally, if I needed to be roofless now 'n then, I'd buy a used Miata for those days; it'd be cheaper.
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