$500 or less will be the big problem.
Ultrashield makes aluminum containment seats in inch increments from 14-18 that are built way sturdier than the comparable Kirkey.
https://www.ultrashieldrace.com/catalog … ing-seats/
You can get the non containment ones for under $500, but seriously consider a containment unit. Unless they burn or get crushed seats are a forever team purchase so Cry now or Cry later.
We run the Rally Sport Halo, but it has the Road Race leg bolsters (must have changed design) I would recommend the Road Race just because the pads on the sides of the legs would have been nice on ours but not a deal killer. (We skew more towards 46" waists)
Mistake By The Lake Racing (MBTL)
88 Thunderbird "THUNDERBIRDS ARE GO!", Ex Astris, Rubigo / Semper Fracti
A&D: 2014 Sebrings at Sebring (NSF), 2014 NJMP2 Jurassic Park (SpeedyCop), 2012 Summit Point J30 (PiNuts)
2018 Route Sucky-Suck Rally Miata, 2019 World Tour Of Texas 64 Newport