Could this idea work ? Did other guys did this ? 318 infos

Yes! Find something you aren't going to use and trade/sell for something you can. Kijiji.
Just looking at your adaptor.. will it accept the holley 2b carb?
I know those things are universal and maybe it is just the photo or me, but the 2 bll holes look too big and too small for holley 2 b.
Looks like Carter and mofoco 2 bl.