Car #: 22
Year : 1991 Posts: 270
no seat cushion, mount seat very low removing rear factory mounts, and with a little angle you should just make it. I have heard of guys your size racing miata before. I am 6' but I have room to spare and I could mount my seat lower if I had to.
Car #: 747
Year : 1990 Posts: 10
I'm 6'4 and I fit a 1990 with about 1 1/2" between my helmet and the hardtop. Like Drago said, aluminum seat mounted on the floor (custom mounts and massaged the trans tunnel). My Ultrashield still has all the factory padding as well.
Make sure you get the cage build around the seat position. I mounted my Miatacage main hoop a little farther back (larger reclined angle) so with my seat back against the tub, my helmet is not resting on the main hoop.
Car #: 48
Year : 1996 Posts: 191
All the above is good advice.
If you're still building your tub, take the time to remove the floor mounts, tilt it back a decent enough amount (20* plus will more than likely be the number), and THEN mount your cage.
That was my issue (6'3"/235#/37" waist) but I bought a pre-built car and didn't want to pay to mod the cage bars behind the seat to fit a Sparco. I also went with a Kirkey but can't remember whether it was a 16" or 17".
Also, you will definitely need a steering wheel spacer to bring the wheel closer to your body.
/pimp mode I have the 1 1/2" spacer from Advanced Auto and am happy with it's placement. /pimp mode
One other item is if/when you go to purchase a head & neck restraint be sure to be fitted properly for one considering your seat rake/lean.
The HANS 20* model ("standard" for sedan drivers) would have been too upright for me so the 30* worked well.
I'm 6'4, 240 and fit nicely...but snug. Momo seat, rear of which is on the floor. No pad on seat part of seat. Front part of seat is raised a couple inches to help with head room. Plenty of leg room. Like Giles, I have about an 1 1/2" from head to hard top.
Thanks for all the input- really do appreciate it as I'm a total newbie. My car has a Hard Dog bar that at the moment, seems to be a limiting factor- hopefully I'll be able to mod either the seat or the bar so I can get out on the track and move forward. Any specific seat info would be helpful.
Finally, my new pal #228 Ken Wilkinson has been very helpful- thanks in advance for your continued patience.