I have a LaJoie self containment seat for sale.
Measurements:
Hips- 15-1/2"
Rib Area- 14"
Shoulder Area- 19"
I am 5' 11" and about 180lbs if that helps as well. Has one set of holes and has been used in a DRC Chassis since new. It is in good condition and asking $500. Can contact me by calling or texting at (812) 890-3256. Feel free to leave me a voicemail if I do not answer. I have pictures that can been sent upon request, just shoot me a text if you want to see the seat.

Thank you!