FWIW, an update...
Swell foop has been completed: new Giles-blessed IP, new timing belt, new injectors, new water pump, many miscellaneous bolts anti-seized, and one Eco (finally) back on the road!
I do want to double check my timing adjustment, and possibly adjust the max fuel. I set timing around 95 but it does seem a bit rattly at idle. Also a bit too much black smoke under throttle... Still as someone else has said, it's clack-a-lack-tastic! Speedier too! (need a boost gauge now)
Oh, need to have the muffler shop nix the cat... hopefully next week. Am going to inquire about a 2.5" system, but given the wallet convulsions incurred by all of the above, a simple cat-splice may win the day.