1)You can chose the port size you want (35mm, 38mm, 40mm, 42mm, 44mm, 46mm, 50mm, 60 mm+...). In my case 40mm
2)You can chose the boost level by swapping out spring/s. I have a 1 Bar (14.7), yea you change a internal wastegate actuator, but they cost way more.
3)You can chose to recirculate exhaust gases back into the exhaust system or use Open Dump/s little power gain.
4)You can install it almost anywhere before the turbo you want. But this = fab work.
5)EBC's work better with the 2 ports.
Internal wastegates for the most part, have very small flapper door sizes of anywhere from 25mm to 30mm. On high HP, high boost cars that will = boost creep.