Swapping to the L67 TB will require a tune.
The L26 UIM can use the L36 gasket (I think I trimmed a smidge off of it to get it to clip in)
You have to tap and seal off the EVAP (I think on the front, right side of the L26 UIM looking at it from the intake opening)
You also need a GenV to GenIII adapter plate (4 bolt to 3 bolt) and slap that thing on there...I sealed mine with RTV just because.
I had to extend the vacuum lines a tad as well, and remove the EVAP canister bracket...at this time I also did new fuel injector o-rings, etc.
It's pretty straight forward.
