ignition spacer?

[lt704]

Hi folks, just a quick question?. I have a new ignition chrome switch benzel that the tumbler for the keys goes into, I also bought a new wire ignition pigtail . The previous owner had a uviversal ignition. The question i have when i put it all togeather there is nothing to make it tight to the dash. I was loking at The Classic Industries book and the show a ignittion spacer?. Is this what i need to complete the task?. My truck is a 68. Thanks Russ.