Originally Posted by DarkJak

I did some digging into these when they came out in hopes they would meet my needs. (I was hoping for a lightweight steel piston caliper without dust boots)

They are Stoptechs. Specifically an anodized version of the ST60/ST40 non-Trophy designs with aluminum pistons. Pretty much all the Stoptech calipers short of their GT ones come with aluminum pistons stock.
They DO have dust boots.
You can use the ST60/40 for pad compatibility.

Compared to the Trophy kits, they are heavier due to having less material cut out, which is part of why pricing compares so favorably with the Trophy kits. Compare them to the ST60/40 kits and treat the branding and anodizing like a bonus.

They have a 1mm offset difference vs stock rotors, but Nissan Motorsports confirmed they would still work with stock rotors if someone wanted just the calipers.
They use the Aerorotors from Stoptech.

I'd say AMA, but this is all the info I've gathered on these before I struck them off my list. Everything else can be referenced from the regular Stoptech kits.