The AI engine is almost identical to ETECH engine. Only differences are the AI has an extra bump on exhaust loves to crack exhaust valves open during intake, to suck partially burnt combustion gases back in, AI has restrictive exhaust manifold and turbo to create back pressure to facilitate the above; the EUPs are definitely CCRS on the AI, whereas they aren't all CCRS on the ETECHs. CCRS is Current Controlled Rate Shaping: the EECU fires the EUP in 2 phases to better control fuel burn. Pre-CCRS engines the EECU sends signal and fires the fuel into the cylinder in a single burst, rather than phasing it in. Minor fuel return differences from the heads, heads are not interchangeable between CCRS and Pre-CCRS without fuel return modification.
Great news is you are dealing with the AI family of engines which is much better than the AC. You can delete the emissions EGR by putting an exhaust manifold and turbo on from a pre AI engine, and if you ever need to replace the camshaft you can put in a pre AI cam as well, though you need to research your cams first because there are differences in cam gear keyway positioning.