Do aluminum driveshafts help that much? What I was thinking is they either give you more of an RPM range or they transfer more HP and torque over to rear wheels, but I'm not sure. Another questions is do sub-frame connectors help in the 1/4 mile and if so who makes the best ones.

a drive shaft is a drive shaft its just strength and lightness that aftermarket ones give you

subframe connectors kinda help in the 1/4 but not a whole lot they mostly keep the frame from torueing so much and prevent your cars body from gettin creases in the metal behind the side windows