i'm admitting i have no experience with either
and hence i don't know which
they seem to be the right size so buying one with good support from the dealer makes sense
buying one with no support doesn't
i could buy a holley or derivative in the UK and get support
if i buy a edelbrock/carter my support is limited to guys who put 500s on 3.5 litre rover buick V8s.I'm never gonna meet them... they like Rovers
this is my point,
you already have an example.
Asking for carb assistance resulted in being questioned/criticised about your cam even though you provided detail and explanation for its purchase.
so if you are going to have to ask questions having something that is relatively common helps,
turn up with something a bit different (your cam) and look what happens :)
i'm sure someone who owns one of those carbs will be along shortly
i'm only here now due to the time difference i'm much further west its 2pm here 9 am in NY
dunno where your location 43551 is
Dave