Aftermarket carb for 273 commando

Lucky you!
regarding looking for new parts from the beginning of your post, before I go to jegs or summit I go to napa. my first resto a 66 mustang I needed rear shocks and another part. I figured what the hell, there was a napa near my house. I walked in there and told them what I needed and the tech went in the back and brought out brand new parts (really dusty) and said here you go. now I check with them before I check anywhere else for older parts. sometimes they have to get them from another napa store but I still get them the same day.