1969 C10 Air Cleaner help

[dtkarst]

Ive been trying too figure out what i need to do with my 69 CST. Its got a 2 barrel carb but didn't have the right air cleaner, so I'm wanting to either get a factory set up or just go aftermarket. Its a 2 barrel, the neck of the carb measures 3'' from what i can tell. I have an air cleaner for it but its missing the spacer and is for a non ac pickup. Anyone know of where to get a 3'' in diameter air cleaner base for aftermarket or an approbate spacer? Air cleaner sits far down on the stud for the fastener and doesn't get tight which makes me thing the spacer is necessary . any help would be great thanks.