all i want to know is what will my top speed be at red line right now with 2.73 i can go about 160 at about 4000 rpm's not that i really need to go that fast but was just wondering thats all is it worth it to get 3.73's or 3.42's thanks

 

This is probably the best tool going!!

Check it out yourself. With 3.42's, 160 will be at ~5000 RPM, and with 3.73's it will be at ~5500 RPM's .

I had 3.73's in my car last year, and they worked really well (except they whined bad ). But for fuel mileage, I didn't suffer that bad.....in fact, I got better city mileage, and only lost maybe ~30 - 40 miles to a tank on the highway. With the 4.10's now (which do 160 at 6000 RPM) I've lost nearly ~60 miles/tank on the highway, but they haul a$$ off the line (I've shaved .4 seconds off my 1/4 mile time, and picked up over 1 mph ).