Hey, new to the site. I project right now is a 1989 gmc v3500, sierra sle package, with tbi454/400/205 drivetrain setup, 4x4 dually. It has power everything, literally every option offered from the factory at the time. Its was a local show truck at an off road shop when it was new, been siting 15 years, now i've put it back together (never realized how hard it was to find info on the r/v trucks haha) Im just wondering how rare is this truck? Of course I can't find production numbers, but just let me know what y'all think? pics will come

ps- also looking for good 35-37 in tires for 16.5 rim. Ideas?