master cylinder for hydro boost

[shep]

I have a hydro boost unit off of an Astro van I was going to use my drum/drum master on this but the push rod hole in the master is deep and the rod on the booster is short. Is is safe to build a spacer for the push rod hole? Do I need to get a different master? If so do I want the c3 vette disk/disk master? Can I put a longer rod in the hydro boost? These are the options I can think of anybody know of any others? Thoughts?

[Roadbuster]

You should be able to get those spacers. I have a Wilwood master and it came with one of those that I use with my hydroboost.

[shep]

Anybody got a part number for the spacer mentioned above?