Ok so my girlfriend's dad is a ase mecahnic and has been doing it for 20+ years. We are planning on re-gearing my diffs in his driveway, as he has all the necessary tools to do so...My question is where to buy from and at the best price. Also any thing else i will need for the job

On a side note, while my front diff is done i need to have my ball joints done..where would be the best place to purchase these from

Truck is a 04 Fx4 NBS with 74,000
Thanks

 

Start an ringpinion.com
I would go with yukon gears, get a minor install kit for the rear. I believe the front diff is a 28 spline 8.8 reverse cut but you'll have to confirm that.

rockauto.com for moog greaseable ball joints. Go to retailmenot.com and search for coupons for rockauto.com.

 

Try Summit racing I've had good luck there.