Dual mag is kinda a deal breaker for me, but you could set it up with a single mag and a EI (some research required to make that work). The other thing is the sump is horizontal induction, with the horizontal carb, which is pretty much a mx nightmare in the making. Right now they aren't too bad, but overhauls are getting pricey because of the limited quantitys of parts. Also I've found them to be troublesome setting up mixture and a pain to start without a dedecated primer system (3 or 4 point).
I'm not sure if the A1G6 is a rear mount or a front mount horizontal, I think it's a front mount out of an C172RG, but I can't be sure. Either way if you converted to Fuel Injection, it would solve and carb issues.