The '60s brought many innovations to the Suburban, starting with the C (2WD) and K (4WD) designations. A torsion bar-sprung independent front suspension was incorporated in two-wheel-drive 'Burbs, and a stronger ladder-style frame was introduced in 1963. By 1965, air conditioning and rear heat was offered to keep the smallest of your eight kids warm in the way, way back. Approximate price, $2,598.