On the v6, all you need is one vacuum line running from the FPR (fuel pressure regulator located on the end of one fuel rail). Plus you may need a vacuum source for the 4x4 stuff depending on what you are running. My 98 needs it. I don't recall my 1st gen needing one. So all of the vacuum ports on the TB can be removed and blocked along with all of the crap they run to. You will have an open metal tube that runs to the gas tank that can be crimped or capped. I took a pic of the EGR delete items but it's corrupt. I'll see if I can find another one. On my 98 all I had to do was cut the exhaust tube off and weld the hole shut, making sure it didn't leak. Then remove the EGR and install a block off plate with shorter bolts. I think your DOHC can either be welded or blocked off with an additional plate.

For the coolant bypass, just follow the two hoses that run into the TB. Remove them both from the TB and loop the coolant. If you can tig aluminum, it's better to weld the holes, but looping a hose will also work fine.

In regards to the 4 banger, I know the 3.5, 3.0, and 2.0 mitsu like the back of my hand but I've only worked on one 2.6L. Does it have the handy dandy vacuum pump lol? Take some pics and I'll help you out!