Odd swap feasability question.

[LS1Inferno]

without delving into too much detail, ive been researching running an I6 (not the LL8) with an e38 pcm since i know the impala OS runs a V6, I have found where i can individually adjust the injection timing, but i was wondering if and where i could adjust the spark base ignition timing. i.e. the ignition relative to the crank and cam position. I know this may be quite a feat, but im up for a challenge, hell i've always wanted to learn assembly language anyhow.

[ScarabEpic22]

Are you ok with swapping reluctors? If so, run an E67 with an LL8 OS, disable the VVT codes/tables and be on your way.

[LS1Inferno]

I have no problem messing with or making relctor wheels, but im sure that the crank angle separation between the cylinders is not the same. Ill dig up an LL8 E67 tune later and look around in it.