Did the B-36 and P2V have two fuel systems?
I don’t believe they did, as it wouldn’t be necessary-most turbojets run fine on AVGAS. In fact most military jet aircraft operating manuals state that AVGAS or even regular gasoline can be used if no other source of fuel is available. The most serious consequence of using AVGAS in a jet is lead deposits; tends to gunk up the hot section after awhile, and is very hazardous health-wise.