The Plymouth Scamp was the A-Body platform that Chrysler Corp. used for their economy class of cars . The A-Body was light weight at 3000 pounds , it was offered with the slant 6- cylinder engine for a base engine , the 318-V8 was an option. The cars were built with rubber floor mats and very plain interiors , bench seats , AM radio & A/C was optional. Chrysler used the 68 A-Body Dart's & Barracuda's for Super- Stock programs and they were very successful . In 1970 they were used in the new Pro-Stock class , but they were now the new Plymouth Duster or Dodge Dart's . These cars ran the mighty 426 Hemi backed up by either a 4-speed manual transmission or the heavy-duty Torqueflite 3-speed automatic. The Hemi cars had the Dana 60 while the auto cars had the 8 3/4 rear end. The bodies were modified to fit big slicks , the quarter panels were cut open , suspension upgrades included 6cyl front torsion bars , Super-Stock rear leaf springs & pinion snubber lifte...