There is a set of 19.5 singles on ebay for $1500, and a set of 17.5 8 bolts for $500... The prices keeps going up but $1500 is outrageous in my opinion.. Dually 19.5 are much more common and see those on ebay and craiglist all the time.
I have a set of 19.5 singles on my 1 ton and the tires are approx 34" tall... Helped a little with increasing cruising speed but not much.. But with 5:14's and 45-50 mph top end every little bit helps!
