2wdf150 and triton: in answer to both ur questions, yes, the stock 4x4s sit higher than stock 2wd because of the different suspension components they have. the 2wd's are tryin to give a more comfortable ride on the highway while the 4x4s are upgraded wit suspension kits in order to give it a bit more ground clearance and whatnot.
2wdf150: if u go to my gallery, my truck is sittin stock wit a 2" leveling kit and 365s on it and, in my opinion, it sets off an aggressive look in its own. but id love to lift it, like ur aiming for. in my opinion, alot of the looks comin from a truck are the tires. its like gettin a new pair of blue-suade shoes! it keeps it stylin! but if i had the money, id love to lift mine, at the most, 6 inches, cause as u get higher, the ride gets more and more uncomfortable on the highway, even though it helps alot off-road, but im not sure if ur gonna be doin much offroading with a 2wd. but good luck with ur choices! i just thought id put in my own opinion and help ya out!
o ya, welcome to the site! i do this at work too! f--kin firewalls