318 Carter BBD 2bbl Replacement Question

I have an inquiry for Slant Six Dan , pertaining to an elabouration on the 'car-came-with-an-eec-cannister-originally-but-now-it's-missing' I also have a 1971 Demon ( 318/904/8.25"/2.71's ) , which is also an "N95" ( California Emissions ) car . The EEC canister was full of vacuum leaks , so , seeing that I don't have to concern myself with emissions' inspections , I pulled the stupid thing ( but , I did keep it ) and simply ran a fuel hose from the BBD's bowl vent to the fuel tank return line ; now I think there's a problem with drive ability : low-RPM bucking , and carbon crap-prints from the single exhaust ; mid-to-high RPM drive ability is good however .
The fuel cap is the correct , non-vented cap ( and it's new ) ; the ignition consists of factory-original electronic distributor ( converted by me via salvage yard dist and
wiring , from a 1973 Duster ) , 4-prong ballast , Pertronix transformer , and an 'Orange Box' amplifier .
From reading your reply to this thread , I'm gathering that it's okay to simply leave the bowl vent open ( e.g. , non-capped ) ; but , what about the fuel tank return line
( the metal line which originally connected -- by rubber fuel hose -- to the "PURGE" or "RETURN" portion of the evap canister , can't remember which right-off ) ? Is it okay to let it just vent into nothing ? I -believe- that how the tank's were vented prior to 1970
( 1972 on non-Air Grabber-equipped cars , regardless of engine ) , but I could be wrong ...
Thanks much !
** I apologise if it seems that I'm hi-jacking this thread ; I'm not trying to , I just wanted to add to it :-) **