$1500??? WOW. I bought one in 2009 and picked it up for $500.
Anyway, i installed this thing myself and it took me several hours, but i took quite a bit of time to measure the bed with the template and inspect underneath the bed for anything that would interfere with placement of the brackets on the frame rails, etc. before i drilled the first hole. My model (can't remember #) had "L" shaped brackets that attached to the frame under the bed and were to line up with holes i drilled in the bottom of the bed for the frame rails to sit on top, in the bed. Your 'under bed' rails are probably a different install than mine, but may have some similarities. After scoping out the overall install i focused on one of the rear most holes to start with. Figured once i had that done properly the template would guide me better on the remaining holes. When i did my bed holes i first drilled a small pilot hole and then re-checked for proper bracket positioning under the bed. It all worked out good, just took some time. Also, if you have to drill the frame i'd suggest getting a carbide or tungsten bit.