Actually the ebay o2 housing doesn't look like it flows as well. The transition from the flange to the pipe on the inside radius is terrible.
The ebay external gate has held for what a year now.!!! Rock solid. Little secret, the TiAL insides fit in. If you're not to close minded to use a wastegate casing from a more cost effective vendor, you'll have the same thing. And hav enough money to buy an o2 housing. Yet, the stock innards of the ebay gate has done fine.
The ebay fmic actually works very well. I don't need water injection for anything under 25psi. My outlet end tank is always cold. Pretty good for a 50-trim flowing turbo. The pressure drop is 1.8-.5 psi. I saved the rest of my money for a fancy intercooler and bought a water/meth injection kit. I'm a nozzle away from whatever intercooler efficiency I want no matter the turbo used.
I've been in dsm's long enough not to follow the herd.
YES! this is the high end shell with all the bells and whistles incuding the factory amp/equalizer. Sounds beautiful for stock 1991

. I remeber having this on my 1992 N/T.
It even has adjustable head rests and the power antena works right

Definately an upgrade from my FWD with manual windows and no sun roof.
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Matt
Bolton Holset H1C w/ external gate, fp2X cams, DSMLink, 3" exhaust, FMIC, water injection
"There is nothing better for man than to eat, drink, and see good for all his hard work." Solomon