This 1991 GMC Suburban SLE was acquired by the seller in 2020 and subsequently modified with a 6.0-liter LQ4 V8 mated to a 4L80E four-speed automatic transmission and a two-speed transfer case. Refinished in dark blue under previous ownership, the truck rides on a lifted suspension with rear air bags and 17″ alloy wheels. Additional equipment includes a trailer hitch, running boards, air conditioning, heated and cooled front seats, a backup camera, a JVC head unit, and…