APV60, it sounds like you are dealing with 3 different kinds of fittings, inverted flare at the carb inlet, pipe at the regulator and fuel pump and AN at the filter. Adapting that all to AN will use a lot of adaptors, to me kind of cobbled together looking. If it is a mechanical fuel pump, your task would be vastly simplified if you eliminate the regulator, which is unnecessary with a mechanical fuel pump anyway, and do the whole job with 3/8" hardlines and flare nuts. Although bending and flaring the hard lines requires a bender and double flaring tool, Installing sockets on braided steel fuel line is challenging too.
I have that same carb. If you'd like to see what the simple hard line setup with an in line filter looks like I'd be glad to email you a picture.
