78 C-10 how to shorten steering column??

[bg67lwb]

I searched the forum looking for a definitive answer, didn't find one. Have any of you guys shortened the steering column on your truck? I've got the seat all the way back and still have to bend my elbows past 90 degrees to hold the wheel. If I could move the wheel closer to the dash by 3-4 inches, it sure would make it a lot more comfortable. There was a mention of a telescoping Cadillac column but no year model was given for the donor or the truck it was going in. Another post for a '84 said he used a '86 Caprice column. Nothing specific to my '78. Help!!