Wanted: Miata trailer hitch assembly

["Craig Haggart, SSRL Accelerator Ops Group"]

Anybody have a trailer hitch assembly for sale that will fit 
a 1996 Miata?  It doesn't need to be amazingly strong or 
anything, as it will only be used to tow a small trailer 
carrying a set of wheels and tires or a dirt bike. 

Thanks in advance! 

--
-Craig Haggart
 haggart@slac.stanford.edu
 Sunnyvale, California
 '96 Miata M Edition