So I decided to go with a Piranha Bar from BXpanded (a member on TBN).  The company specializes in parts for the Kubota BX series.  I chose the Piranha because of its aggressive tooth profile while retaining a smooth underside for back dragging or snow removal.
		
		
	
	 
The tooth bar was delivered about 2 weeks after ordering.  I thin that is very good for a custom length tooth bar.  The shipping documents stated that it weighs 38 lbs., and I believe it.  Included where instructions and the necessary hardware for mounting.
 
The bar was not a slip on installation.  I don't know if the Terramite cutting edge is thicker than a standard Kubota, or if my example had been worn back to a point that it was no longer appropriately beveled.  Some work with a grinder thinned the problem areas.  Some persuasion from  hammer and block of wood set it home.  A 3/4" hole is then drilled in the bucket sides, and the supplied hardware installed.
 
Once installed it is very solid.  It was raining, so I have not had a chance to dig with it, but I see no reason why it wouldn't work as advertised.  
I called the company several times when deciding on a tooth bar.  Each time the owner answered the phone and spoke with me regarding the specifics of my machine, and encouraging me to call him if I had any more questions or concerns.  That kind of service goes a long way with me.  Total cost shipped was about $270.
Terra Joe