Sorry - I just thought you were looking for the P/W ratios...kinda like the title says

The only cars I know anything about are the ITA 240SX and the ITR Camaro/Firebird. The 240SX coupe has no trouble making weight, the hatch needs a little work to get there (mine is ~ 70 lbs heavy with a 260 lb driver).

The Camaro/Firebird in ITR will not get close to weight IMO. That's only based on calculations, but I do know mine (hardtop) weighs right at 3350 w/o driver (and 1/4 tank of fuel). Add even 180 for the driver and 100 for a cage, and it would have to lose over 800 lbs to make ITR weight. Everything I've been able to dig up on the car says 450-500 lbs is doable, but not 800. Which means it is going to be at least 250, probably closer to 300 lbs heavy. In a class where it's already outclassed...