The seatbelt mount changed from seat mounted to floor mounted so you may have to rearrange the seatbelt receiver.
Mount seats to floor miata.
Na and nb miata seats are a direct swap.
I know i ll need a foamectomy but have also read about people bolting their seats directly to the floor without sliders.
I m 6 3 with a lot of my height in the torso.
The floor bolts are still loose so i can be sure that the seat to bracket bolts get seated nicely no pun intended.
I then take my ratcheting wrench and fully tighten the seat bolts.
The front set of humps on my 1991 miata look kind of structural to me.
I get those started a good several of turns.
Seats are one of those things where miata people are always looking for a millimeter but in reality there simply isn t anything else available as seats cannot have negative thickness.
The problem is i can t actually find any examples.
As an aside i m working with a kirkey 36300 seat.
Next i put the seat and mount in the car and start to thread in the bolts to the floor.
Many guys just drill holes in their floor and drop bolts through the miata seat rails and bolt them down.
I mean i know i have a cage in the car but is it really possible recomended to modify those guys to mount a seat.
A good foamectomy will get you 80 there and pulling the rear seat mounts and bolting the factory sliders to the floor in the back will get you another 15.
I ve seen several posts about guys that remove the humps on the floorboard to mount seats lower.
Miata seats are a very common upgrade to the tr4 tr250 thetr6 but one of their drawbacks is finding a way to mount them to the car so that removing and re installing the seats is a simple task.