pressure tank size

Please suggest a comparable replacement! We have a leaking Clayton Mark CM-205 part#1004039 and cannot find its specs. Anyone familiar with this seemingly custom-made reservoir? We are new to wells and the company who installed it (many years before us) no longer exists. Apprx H 48" * D 30".

Hi all! We recently bought a new, two-story house and were not happy with the water 'pressure', or flow rate(I've been reading and educating myself ;)), especially in the second floor master bath. We just upgraded from a 20-something gal tank with a 30/50 switch to an 86 gal tank with a 40/60...