Cam headders and a... monojet?? idk

[Jake's 72' blazer]

Hello chevy fans. I have a 72 blazer with the 250 l6. 3 speed on the floor. it has a mild cam and headders and a 4 brl offy intake. bored .30 over with new flat top pistons. it had a 2 brl holly adapted but it had fuel issues. i found a single barrel intake here at a local bone yard. now i am thinking of getting a new or remanned monojet carb for it. will this be enough to run the truck? i dont need performance just want it to run and hopefully last. thank you. any help is much appreciated.