I used Hedman Elite block huggers to get clearance between frame and steering column shaft. Still had to mount on spare block, heat and tweek them in a 1/2" to clear steering universal by 1/2". So far 500+ miles no problems, The Elite are listed as thermal coated.
You can see in my web photo's here
http://community.webshots.com/user/zeker6
Zeke


The Amish Connection
51 Chevy 1/2 ton 5 window,Vortec hotrod, no horse