I've been looking for jeep srt8 executive chair in uk for the past three years to no avail. I would pay over the odds to have a chair with proper car like deep padding and lift construction rated to over 100kg and thus not wobbling, creeking and rocking after a year. Last i know the company importing them in early 2000's stopped trading. i don't suppose you had any details as to where you originally bought yours from?My Jeep branded chair has served me well, running up to about 5 years now I think? Really recommend it. Not sure if its still available though.
Jeep Executive Chair I think it was.
Extremely strong