This part is the mainframe, and is bolted UNDER the drawbar, with the hole marked "FRONT" towards the front of the drawbar where it attaches to the tractor.A hole will need to be drilled to accommodate the 5/8" bolt supplied with your new 3point. The bolt at the other end of the mainframe is likely already drilled in your drawbar because the bracket that captures the drawbar yoke is bolted there. Simply remove that bolt, and bolt the back of the mainframe there.This should position the mainframe under the drawbar, and within inches of the snap-coupler loop.

This picture will show how the tugs and leveling arms are attached to the mainframe. The "tee blocks" at the top of the leveling arms will snap into the existing latches on the end of your upper lift arms Sway control is performed by the drawbar yoke. If more sway control is needed, weld the unpainted pieces of sq. tubing vertically to the yoke in a position that suits your custom needs . When you are hitched up, these act as rub blocks, contacting the inside of the tugs, limiting the sway. Clamp these in place first, and raise and lower your tugs to determine proper placement to suit you sway control needs. After proper placement is insured, weld these directly to your drawbar yoke. .

The third link bracket (not pictured) sandwiches between the seat and seat deck. The PTO goes through the hole near the bottom of the bracket on D19 Tractors. On D17 series IV, the bracket bolts directly to the back of the tractor with 4 bolts.It fits the existing hole pattern above the PTO.