[Palf70Step]

Here is mine. It came off a 94 C1500 with a 4.3

I didn't bother to drill the head to mount, you really don't need it it bolts solidly without the extra hassle.

In the second picture you can see where i didn't add the second bolt on the upper/inner side. You can see the brace from the tensioner to the drivers side of the head and it and the other braces make it plenty strong for normal use. There is several folks that run them that way and no problem if you don't want to go through the hassle of drilling and tapping the head.