06stangGT

alright, i'm gonna order my gears tonight, and after some pretty intense researching, i only have a few questions unanswered
1 - ordering them from brenspeed, im having them installed by a 30 year ex ford tech, should I go with the ford racing or motive ? I only ask this because i've been told motive was made better, but also have been told motive will give the dreaded gear whine

2 - Do I need the ARP Ring Gear Bolt for $28.49 ?

3 - Do I need the Royal Purple Max gear oil, and if so, how many quarts

4 - He told me to get the master shim kit, but my car is an 06 with 33K , only seen salt a handful of times, never driven in the snow.

5 - 3.73 or 3.90 if i plan on a kenne bell wayyyy down the road when i can afford it

thanks !!! cant wait to order!

2007Vert

I just ordered my 4.10 gears from Brenspeed. You do not want the Motive gears. Get the FRPP 4.10a gears only. I got the master install kit too. Its only few dollars more than the shim kit. My car has 28K. I would rather be safe than sorry and went with the master install kit. Also got one bottle of the RP gear oil. I did not get the ARP bolts. I am getting a axle girdle installed which came with new bolts. Typically if you stay NA go with 4.10s and for FI go with 3.73.

SirKnightTG

I thought it said on Brenspeed's site to get three bottles of the RP oil?

2007Vert

It does take 3 but I already had 2. I should have said 3 were needed.

06stangGT

so should i get the bolts ? and does it need exactly three ?

SirKnightTG

I'm curious about that bolt as well.

I think an email to Brenspeed might be in order.

BleedinBlue

Why not ask your installer, and get exactly what he says?

Get 3.90's or 4.10's unless a supercharger is EMINENT.

06stangGT

i got the bolt just incase, will have vides up post install !