thanks James.

I wish I had one of those 2.8 diesels. Definitely a superior diesel engine with great rep.

Probably don't need 86 trooper parts... If you are going to build a 2.8 4jb1-t in a 1988 trooper. The C223T is just not worth building. 80 hp and 127 lbft of torque. very anemic. I'd wait and get one they do show up from time to time.

Where are you getting the 2.8?

other considerations:

for fuel-water separator/ filter, get a dual spin on filter setup from Jerry Lemond. They are from the NPR and are really cool.
for glow plugs, just wire a momentary switch and maybe a relay.

for a vacuum pump.... do away with it and run a regular GM alternator and GM manual brake reservoir.

I am considering a 6.2 GM diesel I have apart in my garage floor. twice the torque in non turbo form 247 ft.lb.
cheapest of the diesels to own/build. other than the OM617.951 mercedes 5 cyl turbo diesel another very good choice.

6.2L lightest of the big v8 diesels. Comparable dimensions and weight to a big block chevy.