ok i found a 3.73 gearing that's a good price but i've never heard of the compainy...motive performance parts. also wouldi need to also get a bearing kit it says this about it "This Motive Installation kit contains everything you need to rebuild your Ford 8.8" rear end. It is the same as the Motive Bearing Kit without the bearings. The kit is recommended when you install gears in cars with over 60K miles. The kit is cheap insurance for future problems."

Also it says that it's for a 8.8" rear end. is that stock?

 

8.8' is the stock differential. I was confused by your wording about the kit but yes make sure you have the bearings. 2 on pinion and 2 on the carrier assembly seals and i would replace the wheel bearings and you could rebuild the clutches in the carrier assembly, then basically have a new rearend.

 

ok i was doing some research and it sadi that i need all this for changing gears...

Use the following parts to help complete your installation:
-Installation Kit: #M4210C
-Red Line Gear Oil: #RL7590 Qty. (2)
-Speedometer Gear for pre-1999 models: see our listings there are several to choose from based on tire size, etc.
-Electronic Speedo Adapter for 1999-up models: #ERA100

are all these really necesarry i know the oil is but can i do everything else without the things they listed. do i need a new bearing kit? i tho't i might but not sure

 

also i was wondering how much it would effect my traction. i use my mustang as a dailet driver and rain here is unpredictable. if it rains will i be spinning out like crazy or what?

 

It depends on what mods you have to make your traction better is how much it will effect your traction, but if your mostly on stock suspension and dont have other mods like aftermarket control arms your gunna have worse traction if your punching it but driving easy, not heavy footed you should have the same traction. I also have the same exact gears from the same company tell me how it works out i havent installed mine yet. Im not sure on if you need the speedo stuff but i hope not cuz i dont want to have to buy more stuff. I would recomend the complete installation kit with the bearings if your car has over 60k miles even if there not bad its always to be safe then sorry cuz i know i wouldnt want to pull off my rear end a second time. Good pick on the gears i personally went with the 3.73s instead because i wanted a first gear and better gas mileage cuz my car is my DD also. GL keep us informed on how it goes

 

yea i was going to get the bearing kit just in case and keep the stock suspension. but i'm working on it little by little, gotta pay for college. but i'm not sure how much more i can do wiout dropping lots of money into it casue it has so many miles.

what happend the 1st trime the rear end came off?

 

I was just saying its better to get it done right the first time incase those bearings go bad and you have to replace them later when you could have replaced them in the first place and been done with it.