My J5D (a civilianised AOP 5) holds 58 litres in the belly and 62 in the main (behind the firewall)... and every time I fly it I am reminded of how lucky I am to be able to.
It has a Lycoming 0-320 160hp and less than 1000 hrs TT and we were both conceived in 1944.
Google VH-BYM for photos.
kaz