Combo Kit includes both engine mounts and frame mounts
Small Block Chevy Solid Engine Mounts: Inside to Inside width: 2.5" Bottom to Center bolt hole: 2"
Frame Motor Mounts: Overall Length: 6-1/8" Overall Width: 2-3/8" Center to center bolt hole length: 5-1/8" Center to center bolt hole width one: 2-3/8" Center to center bolt hole width two: 1-3/4"