Auto 4.10s all the way, stick the common consensus is 3.73s but i know pleanty of people with 4.10s and a manual that don't have any problems with them besides MPG lol.
What about drone on the highway? My flowmasters have a loud drone on the highway (i Dnt mind though but all my friends and family hate it lol) would the drone het considerably worse with gears ?
Drone has nothing to do with gears. It has to do with the exhaust. It is just sound waves reverberating from the mufflers back to your exhaust valves IIRC.
Get them professionally installed though and go with FRPP gears. The motive ones are good but are louder (gear whine) than the FRPP gears.
You can try and look for them on ebay or even online. I believe they run around 700 bucks and you can get the full rebuild kit from American Muscle.
You can use this and upgrade your dif. while your at it. You can get a torsen dif or you can put in a tru trac if you would like as well plus put in whatever gears that you would want to put in. Just a thought
I'm on a tight budget so Id rather find a rear with 3.55s gears or 3.73s if I can b4 I pull the trigger on gears for my 7.5. I'm trying to get some info on what gears to get just in case I end up with my 7.5