Little more research:
Will go with three inch turbo down exhaust (except the 2.5 x 12 inch turbo outlet pipe). Probably Lindsey racing full stainless exhaust system. The turbo outlet is 2 7/16, downpipe is 2.5 inch ID. and this will feed into a 3 inch exhaust about 12 inches from turbo outlet. With cat delete pipe (and the ability to replace the cat per Lindsey racing), there will be as minimal exhaust pressure as possible
Figured out the turbo oil return. As many of you probably already know, there is a bolt already in place on the driverside oil pan which should perfectly fit the 944 turbo oil return line bung and banjo bolt. Just had to double check that my pan had one too. Looks like mine has never been removed. you can see it by looking down towards the pan from right in front of the master cylinder.
It becomes very convenient to do this conversion because of so many similarities between the 944/951 and 968.
Last big ticket items:
1) haltech E8 (with new (one year old) programming that allows about +/- 15% fuel control with wideband sensor ...makes tuning easier) ~1000$ with harness
2) Lindsey exhaust ~1100$ w cat
3) block work (pistons, bore and hone, shipping) ~3000$
4) headwork (valves, guides, etc) max 2000$
5) extra bolts, clamps wiring, injectors, intake filter, tubing, all new engine seals,bearings, h2o pump, etc 2000$ max
6) HMR radiator ?~800$
7) intake welding ~100-200?
8) carillo or HMR rods 1200$
= 12,000 max
+ parts already obtained 1700$
and trans rebuild w/LSD 2500$
and new paint and body work 5000$
OK..so I am going a little over the 10,000 budget, but it is in increments....and I am also buying well made parts and trying to do this the right way. What can I say, I really like this car.