Attached is the 2.5 g-head cal I am running on my 89 turbo mini with a 46 trim hybrid, header, open exhaust, intercooler, and charge sensor. The cal is based on Moparzrule cal but was detuned a little and I made a few changes which improved starting and driveability on my van. My van did not like all of the timing in the original cal. With this cal the engine sounds better and the plugs look better as well. I am running about 8 degrees of initial timing. I would start with 10 degrees and either advance to 12 or if you get the CEL knock back off to 8. The knock sensitivity is also more sensitive on this cal. I am running 55psi of fuel pressure and RN9YC Champions.
Update:
I am currently running Autolite 62's (Champ RN7YC) and the engine likes this plug much better than the 63's. I am going to try the AR51 ( non resistor version of champ RN6YC). I will post a message with the results. After reading the 62's I dont see any problem going 1 coolder and this would be good since the 62 is obslete.
*** There is no boost control on this cal ***
If you are looking for every last bit of performance this cal is not for you, it is more for a daily driver than a race car.
PM me if you have any questions