Ok, from Polar Trailer Company here in Houston they tell me they ordered a Hidden Hitch Class 4 receiver hitch for a '74 one ton Chevy. It's a universal hitch with five slotted holes on each side of the tongue. The kit uses three 1/2 inch castle nuts per side. I drilled upside-down after marking each hole to mount in the middle of the frame. The triangle drops well below the pintle hitch, clear out of the way. I'll have the number for Polar Trailer up soon so y'all can call in if you want. $85 was my cost. I hope this helps.