Honestly speaking? No, there is no advantage. That isn't to say somebody might argue you'd have a lower center of gravity. You will although there is a "but" involved. The bottom line is the AD trucks enjoyed some aerodynamic advantages but at the time they were built aerodynamics as a serious design element had not occurred. Going lower? That depends entirely on your point of view. I have no use for a pickup riding 4 inches off the ground, but some folks think that's really special. Again...all point of view. The AD trucks were engineered to be pickups and while you can certainly enjoy driving them on the highway, they were not in any way designed for today's speed nor today's highway maneuvering. The speed limit when these trucks were made was 60 daytime and 55 at night. In that vein, the AD trucks will be perfectly fine. If you want a pickup to drive at 75, 80 or some other speed like that, then you need a newer design. Driving an AD truck at any speed over 60 or 65 is going to require some extra work on suspension, steering and especially...brakes. Now, in defense of the S10 swap, you will get those things and some say you can do the swap in a way that maintains the original height (some say this isn't so easy without making it look "odd"), but any original value your truck may have could and probably will vanish. But again in fairness if the swap is done correctly, you may find a market for it with younger people who want to drive fast. Good luck. If you do elect to go this route, get the work done by somebody who has done this several times before and who knows exactly what they're doing. It won't be cheap, but at least at that point it will be done right and you'll be able to get a clean title, vehicle inspection...and most importantly insurance. Also...get your money ready.
