Note, this is for 94/95 L67'*. The coupler for the FWI will not fit a 91-93 L67 TB, and the 3.5" tubing is far too much for those years, and will not produce laminar flow and accurate MAF readings.
For 94/95 L67'* and 'top-swapped' 91-93'*, here'* your guide in a nutshell:
I ordered the 97 SSEi kit, and asked for extra tubing. I don't recall if it was half or a full foot extra, but I don't think I needed any of it. Total length of mine is 26" of tubing, but it could be a little shorter or longer and work fine.
Install the TB adapter, but push the aluminum insert/sleeve past the IAT hole to block it:
Can you see the bright aluminum in the hole?
Route your tubing into the old hole in the fender for the evap canister. You'll need to replace your double washer reservior (if you have it like I did) with a SINGLE purpose reservior from an SE/SLE. I simply swapped between my two cars. Be creative in how you hold the filter in there.
Relocate the evap purge canister in an UPRIGHT position. I haven't done final mounting on mine yet.
In the OTHER bright aluminum sleeve (for adapting the tubing to the filter) drill a hole and install a bushing for the IAT:
Note that I have fabric (black) tape around this sleeve to either side of the bushing for cosmetic reasons.
This puts the IAT directly above the filter.
Here'* a view of the filter location with the camera pointing up at a 45 degree angle, looking from front to rear at the front driver'* side tire:
Because of the lack of shielding, I strongly suggest any 92-99 H body SHEILD this from road splashes and debris. I'm not, because I don't drive this car in the winter.
Finished look from the top (without final relocation/mounting of the Evap canister):