If i put 3.42s in my 5 spd will it b better then puttin in 3.73s?? and how do they affect my top end speed...will i have a nice off the line jump and then drop off???

also

i wanna get my car into the 13's...can i do that by putting in a supercharger to boost me another 100 horsepower?? and if so wut type of supercharger do you recomend as the most efficient to get the job done...

 

From what I hear, its not worth putting 3.73's in your car if you already have 3.42's, but no it should not hinder your top speed all that much. If you are willing to spend the money talk to supersixmotorsports.com about supercharger friendly cam and heads ect. Keep in mind, getting a supercharger and supercharger parts adds up to the amount of a LS-1....