2002 Viper specs for that run:
3350 lb with full load of fuel and driver
Full cage, stiffened chassis
Triple adjustable penskes- on base setting - no tuning done yet
18x13 with full tread Nitto NT01's: 335/30/18 square
Dyno from 12 years ago was 530 rwhp on dyno jet

1973 Duster specs for that run:
3840 lb with 2/3 load of fuel and driver
4 point roll bar, minimal stiffening (subframe connectors, XV radiator crossmember)
Bilstien RCD shocks. 1.04 TB's, 0" arch MP leafs, custom front sway, hellwig rear
18x9.5 with Hoosier Continental slicks: 285/30/18 square
Dyno not run with 392, but assumed 480 rwhp based on prior #'s from 5.7 dyno (420)


The Viper is significantly easier to drive.