I just replaced the upper steering shaft / universal / center shaft and lower universal. I wasn't happy with the torquing action I could feel and see from the hollow upper steering tube.
While I was at it I replaced the upper and lower steering shaft bearings. PN 32-31-1-158-835
The factory one:
https://www.iconicparts.com/steering-universal.html
https://www.iconicparts.com/pub/medi..._universal.jpg
The upper shaft I used a Borgeson 3/4" - 36 spline end. 3 feet long so as to slide past the factory engine bay steering support. To give the existing steering tube a more substantial feel. PN 409036
https://www.summitracing.com/tx/part...9036/overview/
The upper universal I used a Borgeson Vibration Reducer Universal PN 034934
One end 3/4" -36 spline, the other 3/4" Double-D
https://www.jegs.com/i/Borgeson/153/034934/10002/-1
The center Double-D shaft support I fabbed a bracket to mount a Borgeson support Heim Joint PN 700000
https://www.summitracing.com/tx/part...0000/overview/
The center shaft is a 3/4" Double-D Borgeson PN 409418
https://www.summitracing.com/tx/part...9418/overview/
The lower Universal is a Woodward Steering 3/4" Double-D and 14mm-34 spline (toyota MR2) at the rack. PN UA116109
http://www.woodwardsteering.com/PDF/...d%20Shafts.pdf
