Suspension Fabrication Help Needed

[klkordzi]

I have an 85 Vette and have redone the front suspension with poly bushings and coilovers. I'm working on the rear doing the same thing. On the rear of C4's there is a tie rod assembly the comes from the top of the differential down to the knuckles on either side. Vette Brakes and Performance sells a replacement using heim joints for $300 but I beleive I van make it up for a lot less. What I can't find are tapered shafts to fit into the knuckle like the OEM tie rod end but with a means of attaching the heim joint. Does anyone have any suggestions?