First post so thanks in advance. Finishing up sons, SG nova need 1/8 gear ratio help. Gonna have bte 8 inch conv built once I know gear. Like to cross stripe at 6800-7200 rpm , I’ve read soooo many posts , used all the calculators, but none seem to pinpoint our small ci combo. 70 Nova , 2500 lb w driver, 450 hp 355 “beginner” motor, 1.80 gear glide w brake, 9 inch , 14x32.5 on 4 link w anti roll. Car was 582 bbc w 4.30 gear 1/4 but we only have 1/8 tracks surrounding us “ N east Arkansas area . Gear calculators have me in the 6.00 & up range but with my weight & small “buzz saw” engine I’m thinking 5.43-5.67s , I’m lost in between calculations & real life experience hoping you guys can help .