Could it be a Satellite, RR tribute? That would explain the grille. I can't see the gauge cluster.

It looks pretty good overall, actually love the painted bumpers on the 71/72 Plymouths. While I get the whole "personal preference" thing I truly HATE when people put two stripes on these cars, it looks horrible to me not even considering the Roof strobe stripe is installed improperly, its back several inches to far (the last strobe segment should be centered over the wheel) Additional pet peeve is the extra 340 stickers above the side marker (the hood has the engine call outs) those would only be there if it was an air grabber car. The car is painted a color that wasn't available for the model year which I also generally frown on, but it looks pretty well done...

All that being said, if its a real factory 340 RR, its only a few inexpensive changes from being a fun cruise nite driver so price would be in the ball park of todays pricing for a car of this quality.