Large or Small Steering Gear Box?

Hi,I have a 1990XJ 5 inch lift, 33 inch offroad Goodyear Wrangler tires. ARB locker up front, 4.11 diff ratio, 4.1 Atlas II transfercase, Currie 9 inch rear. I Plan on 100s of miles of trails. Rocky trails in Death Valley, overlanding, etc...

I am replacing the steering gear and pump.

My old set up was an AGR gearbox pn 262352. I got a replacement and to my surprise it is smaller diameter gearbox, about 3/8 inch diameter smaller, and 3 mounting ears rather than 4 although only 3 were used on the old gearbox The new gearbox is AGR pn 225352.

Please see descriptions in links below

NEW BOX.....
http://www.steerco.com/SearchResults...225352&Submit=


OLD BOX....
http://www.steerco.com/SearchResults...262352&Submit=

Also I have pump 816256...

http://www.steerco.com/SearchResults...816256&Submit=

Should I be ok the smaller gearbox or sick with larger? Pro's and Con's of each?

Also the new gearbox does NOT have a billet top cover, it is cast, the description and image on the website says it is supposed to be billet

What is the advice please?

My 2001 has 33"s tires and was hard to turn in rough terrain, with the stock steering.
I had tried a couple different steering boxes before getting a big bore steering box from PSC, along with their matching pump. It's a powerful combination that allows two finger steering
I would want the same from AGR, looking at the two boxes you listed, I'm not sure what the differences are beside a slight change in steering ratios.
The AGR's small pump pulley is designed to spin the pump faster, so at idle, you still have useable steering.
Looking at AGR's site, it would seem you need a SuperBox 1 or 2. Unfortunately, the site does not show either of the boxe's piston diameter, if it is a standard bore or big bore.
AGR does have a technical answer line, 817-626-9006, give them a call for an informed answer.