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hey guys im building up my notch and i figure id give some info and see if i can get some help....i wanna send this car into the nines as a street car on nitrous im doing a sbf, aod and a 9in with 4:30 rear gears heres my question i have a tubular front end by aje that uses a motor plate and coilovers my question is what spring rate for street strip im figuring a 150lb but i want some oppinons and i wanna know should i go 14in spring or 12 in? that will be on 90/10 struts up front...and im lost on the rear coil overs lol what should i do for spring rate and im thinking a 50/50 shock out back oh and it will be backhalfed. thanks all help appriciated