I looked through my how-to pics and managed to blow it up enough to pick it out of the line up above. It is the middle one "Multitech".
I don't know how early it would have to be to make that theory true. My Imp was built in October 2003 and has a hybrid L36/L26 (like all 2004-2005 Series IIs). That means I have the following.
Series III heads
Series III block
Series III valving
Series III bottom end (although in 2004 it was nearly identical to the Series II for the N/A version; 2005 received stronger rods on the L26 and thus hybrid L36s)
I may scrap the whole SS M90 kit. I wanted to go F/I but I dunno anymore. Splicing all of my fuel injectors doesn't seem fun. Are there no Multitec injectors that are higher flow?? ZZP says stock L36 injectors max about 300 crank HP and I'll be over that with all the mods and a SC...