Developed to mount LS series (4.8,5.3,6.0) Gm engines into your 60 series chassis. When mated to the Gm 4L60/4L80 transmissions this custom cross-member will bolt on via a Gm Th350/Th400 trans mount (not included). Welding to the frame of the included cross-member brackets is required. The location of the cross-member is determined by measuring from the OEM skid plate bolting points. When fitted at this location the cross-member will place the drivetrain in the optimum location for welding engine mounts into place on the frame. As photographed in the gallery the Advance Adapters 4L80-Toyota 19 spline split case adapter (not included) was used to complete the drivetrain and retain factory driveshaft locations. Basic mounting illustrations included in the packaging.