The next problem I'm having is with my carb.(4160 holley four barrel) My first ? Is there freeze plugs on carburetors? the reason I'm asking is on the secondary fuel bowl I have a leak in what look to be a freeze plug. Or do I need to just buy the housing for the secondary fuel bowl?I just had this carb. rebuilt. Any help would be GREAT. THANKS Chris 69 300 convertable