get a pair a sub-frame conectors to stop all that flex. With stock 225/60/16 tires(i think thats right) and a .68 over-drive(i think thats right too) you will turn 2243 RPMs at 70 MPH with 3.73s. You will turn 2134 RPMs at 70 MPH with 3.55s.
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1990 Dodge Dynasty with 275,000 miles. Mods:chiped paint, CD player. Sucks but it was free. Praying for a stang.
The "Guetto Glider"
If it ain't broke, you ain't tryin hard enough