Jake,
I'm with you, I searched a long time to find a base model SR5 that had the 2.7l 5spd, clothe seats, and as few 'bells' as possible (on a 4runner). Mine does have power windows (wish it had crank), but I don't think that was an option for that gen of 4runner. My point is I wanted it a basic as possible.
I'm sure my 4runner is a little heavier than your truck, just due to the design. And it is a little heavier now. I added sliders, an AOR plate bumper with warn M8000s winch, full set of Shrockworks skids, and a modified Safari rack. When I bought it, it had 225/65r15 (only the base models came with 15" wheels and tires), I found some used 16" 4runner wheels on Craigslist, painted them black (isn't that required...haha), and mounted a set of 235/85R16 (32" pizza cutters) Duratracs. I have been happy with them, but I think I want to go 255/85R16.
Sorry for the long reply, just giving background of why I'm thinking re-gear (4.88's) at the same time of ARB install. My 4runner is not my DD, and I'm not naive enough to think going taller gears will make it a 'sports car'. When I get in my 4runner, (always to go to the hills), I'm not in a hurry...so I don't need it to go fast. I am thinking taller gears for 2 reasons. One: just be nice to have a little lower gears on the trails, (to help crawl over, around things), and two: to help offset some of the extra weight I've added. Also, I agree with you that a front locker will probably rarely get used, but I figure since its gonna be opened up for gears, now is the time to add it, if I'm ever going to. I plan on purchasing complete 3rd members (front and rear) from East Coast Gear Supply, and installing them myself.
Your thoughts would be greatly appreciated. And sorry to hi-jack your thread. I thought this info might be helpful to someone else, as well.
Cheers
Durwin