how much could i find a good set for? also is it something for a shop to install or could somebody with moderate skills do it? and does it require you to get the spedo re calibrated? where could i get that done at?

 

Search for prices, call any place that does performance around you to see if they can reprogram your speedometer, and it doesnt look particularly difficult, I did my rear wheel bearings and they were a cake walk I dont think the diff would be that much more involved.

 

yes its hard, yes it will make a huge difference, you will need a tune (hypertech pragrammer) for the speedo to be on.

also a good idea to replace all the berrings while your back there