For Christmas........

**Mookz1** · 11-26-2010, 06:06 AM

With my 500HP engine, im looking to buy a rear end combo package (rear end, gears, spline count etc.) for myself for Christmas. I really want some inputs on what to go with. I want this thing to plant on the strip yet still be able to drive on the street w/out to much trouble. I can go with street tires for the street and bolt on slicks for the track......so what tires are optimal? It is a M6 by the way. Let me know, it would be nice to get and install for next season. Cheers.

***Ed Blown Vert*** · 11-26-2010, 07:29 AM

What is your budget?? A Moser 9 is a good option.
I run one with a wavetrac. Overkill for an A4.
But only wanted to do it once.

**pajeff02** · 11-26-2010, 09:24 AM

MWC or standard 9" would probably work best for you. You could also go with a Dana, but it is a heavier unit than a standard 9". Like Ed mentioned, the Wavetrac seems to be the thing to go with these days. I missed the boat by just a bit though and have a Truetrac in our car.

**Mookz1** · 11-26-2010, 09:39 AM

Nine inch sounds right. Is that cool for the street driving too? Also, I need to know what I put in that. 4:10's a little much or shall I go something different? Again, M6. Splines? This is where I am way out of my leauge........I just dont know. With that, what else is there to know? Being into cars I always know there is more to it lol. Thanks

**pajeff02** · 11-26-2010, 10:46 AM

4.10's in an M6 are what everyone recommends. You'll be fine driving it on the street. Have you already upgraded your rear suspension pieces?

**Mookz1** · 11-26-2010, 10:50 AM

I have BMR LCA's, adjustable panhard bar, 2" relocation brackets and subframe connectors.

**pajeff02** · 11-26-2010, 10:51 AM

The you are definitely about set for a new rear. Torque arm is still stock?

**Mookz1** · 11-26-2010, 10:56 AM

yes. torque arm is stock.....a recommendation is welcome and any other thing u can think of. I dont want to tear into it and run it forgetting stuff.

**pajeff02** · 11-26-2010, 12:39 PM

UMI makes great stuff and they are also a site sponsor: UMI Performance As long as you get the T/A off the back of the transmission and buy something compatible with your exhaust setup -- those are the two key factors. A tunnel mount is better for the strip, but does transmit driveline noise into the cabin (ask me how I know). An adjustable T/A will also allow you to set your pinion angle. This can be altered by lowering the car or installing an aftermarket rear so it is nice to be able to correct for it to maintain the proper driveline geometry.