like this http://www.good-win-racing.com/Mazda...20-1004bo.html
I went with the replacement HD bracket on my track toy
$40 shipped
2009 MX-5 STR and track toy
2003 Z06 -- Not a Miata, but 3200# and 400 RWHP is fun
OTM -- 2012 Sierra, 2016 Impala (Appliances)