The hard top ht designation means this bar is about 1 shorter than the standard hard core model so that it will fit under the miata s oem hardtop the standard hard core will not.
Hard dog roll bar miata install.
The roll bar foot plates fit against the seat belt reels which stay in their original location but do not use the original spacers.
I m doing this on a 1994 na miata which will be exatly the same for any 1990 19.
Using the 17mm bolts that held the bottom of the seat belt mechanism in place secure the bar to the seat belt tower.
This is a little tedious cause you cannot get a socket in there and you ll have to use a combination open end and box end.
Full install how to guide for the deuce double hoop roll bar from hard dog.
Second part of the installation of the hard dog roll bar into a nc miata.
First part here https youtu be fwuvak1lt9u autox fun in this car here https y.