Looks good. Great setup and likely similar to where I'll start if I ever get back in a Miata.
Time for an intercooler/water injection and a pulley. 8 psi here you come ...
Check and see if the swaybars have been upgraded. Given the shocks and springs that would make sense. If yellow/gold they are JR, if Red they are FM or RB. Can't remember who's bars are blue.
Also check out under car bracing. A front and rear subframe brace would help stiffen the car up a fair bit. RB front and FM/Cannon rear bracing is the best.
www.eunos.ca will be your friend ...