In the early 1980's i built a Vega wagon, streched the WB 2" and i put 110's on it, it was a steel headed 482" rat with a dominator on gas, it was a ladder bar car. They worked well in that time period, but things have changed in today times. It went 9.82 the first full pass(today i'd be embarassed to run that with that much car). It also weighed 2450lbs. Today i would probably be thinking differently, because in those days we didn't scale a car nor did we have the scientific data that we do today. I'd pick what you think is right and try it, springs are cheap, i run 130's on a 3250lb Malibu and it will plant the bumper.
JMO
Zip.