Please help me figure out how to make an AI Sol light hanger?

I saw an awesome light rail at MACNA that was used to connect to SOL units together. It looks like this...

I have been bugging AI monthly about selling me one of these but they won't. I think they must be waiting for the release of the Pheonix I don't know. If anyone on the board can score one of these for me that would be great!
Assuming nobody can get me one, I am giving up waiting on the release and want to build it myself. It looks to me to be an inverted heatsink. 


So I am thinking I just need to buy an thin heatsink and get this done. The problem is I am not very good at measuring things like this. I know there are people out there that could measure the heatsink of the SOL unit and tell me what to buy over at HeatsinkUSA (or similar store). It looks like if I knew the right size heatsink to buy then this mod would be easy.
So, what do you think of this plan? Can you check out your SOL unit and do some measurements for me? 
Thanks.

 

Thanks Matt.

I would need them about 16" -- 20" apart. (I think) I have not gotten that far yet. So the bar would have to be longer than that obviously.

 

AI sent me some info




1) Here is the approximate measurements of the heatsink/fins only. This does not include the bottom housing. These are very close to exact, but not guaranteeing this is indeed exact. L 11 7/8 x W 5 3/8 x H 1 1/8.




The rail system that is in the works at the moment will be an aluminum bar that will slide into the Sol's heatsink, and then will be pinned down by a set screw and mounting screw and will be mounted parallel to the tank that is included in the attachment.

 

I think I have this figured out. I bought a $10 piece of aluminum stock. It is an L shape. I cut it to size, drilled a couple holes and did exactly like it looks in the picture above. It is totally solid and secure.

I'll take pics once I get it hung.