Has anyone made a small block engine dolly??

thanks guys, i was hoping to find someone who had one that they could measure for me because i'm not quite sure on what measurements should be. Something like what crackedback has is really what i'm looking for or any of the ones people posted links too, I just want to save a few bucks and build them myself, in my manufacturing class at school we get all the materials for free and then all i have to do is cut it all and weld it together. If anyone is willing to measure one up for me that would be hugely appretiated, thanks for all the responses guys!!