Well the problem actually is that due to the tank's lenght the 14 ounces doesn't fit in the space between the firewall and the next structural thing.
Therefore what I need is to have a shorter same capacity tank, since there's none complying with this I need to connect two 8 ounces tanks.
My doubt is should I do it in parallel with tee's or should I do it in a serial kind of way that's one hose connects the first tank's clunk, then a second hose goes from that tanks'pressure line to the other's clunk and another hose goes from second tans pressure line to the muffler.
In pararel is by having one tee for the clunks and one tee for the pressure line
Sorry if I wasn't clear enough at the beginning, have a nice one