IHI OEM manufacturer
Upon further research, it appears the Kinugawa is a part of Kamak which is the OEM supplier of the IHI turbos which came factory on many GTIs. According to their website they simply upgrade the IHI version of the OEM turbo from the MK6 GTIs with bigger turbine and compressor wheels to meet the specs of a RHF5H.
Compressor wheel 43.3/56
Turbine wheel 40/53
They claim it will support 290-330HP and it is direct bolt on with no mods needed. I am in no hurry to purchase and will perform some more research before purchasing, but I am leaning towards the Kinugawa. Who knows, I may just go with a Garrett GTX big turbo and try and work through all of the mods needed.