both cars have ladder bars with coil over springs.....Dart has 10 x 29 Hoosier on 15 x 8 with 4.5 BS and the rear has been narrow 2 inches on each side.
Demon has 10.5 x 29.5 MT on 15 x 10 with 5.5 BS and has been narrow..I think 1.5 inches on each side..
Both cars have full tubs...and both cars take a bigger tire if needed.