What a great truck to start with. Really nice. My '98 GMC rcsb has a 4/6 drop, with 20x8.5 & 20x10's with 255/45 & 295/40's. The sidewall profile is the same front & rear. Toyo Proxes. These tires, mounted & balanced on Boss 338's, delivered to my door cost me a little more than $1800.00. From STEVE'S DISCOUNT WHEELS, In Chicago, to Vancouver B.C. Canada, in around 10 days. Great guys to deal with. Told 'em what I had, what wheels I wanted, & they handled all the rest. That included shipping, duty & customs fees. Local tire shops around here were almost twice as much for the same set-up! They wanted $1500.00 just for the tires. It was like a NASCAR pit stop in my driveway the day they showed up!
Keep posting your progress.