you can't just put any ring and pinion set in any diff. It just doesn't work like that.

Ring gears vary greatly in size. A 10.5" Eaton is not gonna fit in a 8" toyota housing or carrier just like an 8" toyota ring gear won't fit around a 10.5" carrier.

Also you will get different pinion setups, three bearing like a ford 9" or GM 14 bolt vs. the 2 bearing setup like in most other diffs.

You can also have reverse cut gears which will only work in high pinion housings like the Dana 60's and 44's found in the front of solid axle fords.

These gears are so cheap because there is a large market for them. The Dana 35 axle is found under the rear end of every Jeep wrangler since before they were called that. Later model CJs (earlier models had the AMC 20 rear end) had them as did all YJs and most TJs.

Samarai's have become a very popular budget wheeler to build so the prices on mods has come down.

The S2000 gear market just isn't strong enough...

Don't go off buying random sets of gears and trying to fit them in your housing, it won't work. At least read up on the subject before you try to reinvent the wheel. You don't sound like you know much about differentials. Who knows, if you take the time maybe you can find a cheaper source out there. Stranger things have happened...

 

gears...from ebay....how would that possibly for a good idea?

 

I'd get the 5.38 gears

 

I wouldn't do it, but go for it and keep us informed of how well they work. You may be onto something there.

 

 

The 4.44s for B2200 series trucks were made by Mazda, same as the J's gears, same as our stock 4.1s. Miatas and RX-7's also ran this ratio.

 

the ratio doesn't really have anything to do with it. It is ring gear size and fitment of the pinion and ring gear along with the proper spline count (and preferably pitch) and diameter on the pinion.