Has anyone used Moto Feet?

I ordered a set of these for my 390(actually a 402). I thought it would be cool to have since I am building my engine here and transporting it 80 miles to put in my car. A friend of mine wants to fasten it to something and use it as a test stand. Any thoughts?

http://www.pawinc.com/shoppingcart/ShowItem.cfm?itemid=71082&catid=214

 

that for 60 bucks, You could make them yourself. Just my $0.02.

 

Technically I am not paying for it. I did some work for a guy and he didn't have any cash. He ordered these for me on a credit card. I figure it is better than getting nothing out of my work.