Thanks.
It's held in by being a really tight fit, and the servo mounting bracket. I had to sand the servo in several places to get it to fit.
I would like to find some chrome plugs to cover the screw access holes but all in all I'm very happy with the way it turned out.
I need to look up the Kirbans cover for the front.
Here's an update.
I made a post looking for the servo cover and no dice. Called Kirban and other venders that used to carry them and again no dice.
Then someone have me a link to a corvette supplier that had some and it looked that would work.
Well the vette cover is not the same, it is way bigger. It is a 5" dia. cover.
But in a strange twist of fate a member here was given a cover from a friend only to find that his cover was way to small. So he contacted me and we discovered that some how someone installed a corvette servo on his car.
Walla, bim bam boom. We swapped and now we both have cruise controll covers that fit.
Here's the finished project. Sorry it's a little dirty. Looks a lot better when polished up.