Ron,
In the 1967 Motor Trend Magazine 'Super Cars' of compartive new Model 1968 cars,
considered 'mid-size performance cars', with a weight/horsepower factor of 10.00 and up.
1968 Road Runner 383/335HP,,,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3424 (10.22 wt/hp)
1968 Dodge Super Bee 383/335HP,,,,,,,,,,,,,,,,,,,,car weight #3440 (10.26 wt/hp)
1968 Dodge Charger 383/330P,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3581 (10.85 wt/hp)
1968 Chevelle SS396 396/350HP,,,,,,,,,,,,,,,,,,,,,,,,car weight #3549 (10.14 wt/hp)
1968 Buick GS 400 400/340 HP,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3512 (10.33 wt/hp)
1968 Oldsmobile 4-4-2 400/350HP,,,,,,,,,,,,,,,,,,,,,,car weight #3510 (10.03 wt/hp)
1968 Oldsmobile Cutlass 350/325HP,,,,,,,,,,,,,,,,,,car weight #3271 (10.06 wt/hp)
1968 Pontiac GTO 400/350HP,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3504 (10.01 wt/hp)
1968 Pontiac Lemans 350/320HP,,,,,,,,,,,,,,,,,,,,,,,,car weight #3498 (10.93 wt/hp)
1968 Ford Fairlane 390/325HP,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3429 (10.55 wt/hp)
1968 Ford Torino GT 390/325HP,,,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3487 (10.73 wt/hp)
1968 Mercury Cyclone 390/325HP,,,,,,,,,,,,,,,,,,,,,,,,,car weight #3487 (10.73 wt/hp)
1968 American Motors Rebel SST 390/315 HP,,,car weight #3443 (10.93 wt/hp)
Motor Trend (December 1967)