If you used some adapters for the early 5.7 heads (early 5.7 guys used them for 6.1 intake swaps) and wired up the servo motor for the variable intake (lots of 5.7 eagle guys have done this when swapping 6.4 SRT intakes on them, I think they use an MSD rpm switch set at 4400 rpm, this seems to be the cross over point for the long runner to short runner) it could be done.