[JRyan]

Terrance,

For SS/IA at 10.00 lbs. with the 280/305, simply multiply the NHRA factored HP x 10 = 3050 lbs. Add driver weight of 170, for a toal of 3220 lbs. minimum weight. I doubt you can get that car that light, so I'd suggest you run it in SS/JA at 11.00 lbs., or 3525 with driver.

With the 275/313 combo in SS/IA, it would weight 313 x 10 = 3130 + 170 lbs for driver ='s 3300 lbs. That might be achievable, but it'd be pretty light on the rear.

Hope this helps.

Jerry