Got a pre roadworthy check on my car last week and the guy there tells me I need an standard air cleaner for my holley 750 so if it backfires it has the extension on the cleaner. I have never seen an air cleaner like this that will fit a 4 barrel carby before. Are they even available anyone. Feel free to move this thread mods if you feel its in the wrong place although I am merely trying to find out whether they are available and when I do find out then I will start chasing one up.
Heres a pic of the air cleaner I am talking about.