Hafta think the main reason that Chrysler chose a hard top over a post sedan for the '68 Hemi S/S cars was looks since the old "win on Sunday, sell on Monday" adage wasn't happening with lo-po, zero option sedans.

Not to say that Dart sedans can't be made to look mean but back in 1968 the majority of the 'youth market' wouldn't be caught dead in a Slant 6 grandma sedan. Looking at it that way, the '68 Hemi package car program would have been tough to justify to management if there was little to no potential for sales. The engineers knew perfectly well the post chassis was lighter and stiffer so choosing to design the package around a hardtop defied basic racing logic.

No matter though, the hardtops did OK anyway and still do!