rdodd,
It is an easy job, just take your time. I will be doing the same thing you are sometime next week. I had the same idea of leaving the 16 cm housing bolted on the manifold and then just putting the PDR turbo on it. The only gasket needed is the oil drain gasket. I am going to never-sieze all of the bolts etc. Make sure everything is square and the turbine doesn't bind. Should be an easy install. Also make sure to prelube the turbo. You can either dump oil down the presuure oil port before you hook up the oil feed, or you can hook up the oil feed and disconnect the shut off selenoid and crank the engine and prelube it with the oil pump. I can't wait to find out the results, can you?
Oo. Oo. Oo.
Jeremy