[hounddogs!]

Confirming that lt1swap.com is a great info source too. I followed his videos to strip down the 2004 wiring. My '68 wiring is in pretty unmolested, so I didn't go the Painless route.

I kept the factory gas tank and the canister fuel filter on the pass frame rail. Mounted a Bosch 044 and 5 micron filter downstream of that. AN fittings added to the corners of the tank for feed, then used the factory feed pipe for a return line.

Stuff I remember in no particular order:
*Use GM O-rings on the injectors. I had a leak and some fiery excitement with Napa pieces.
*Moved the batt to the driver's side
*ECM mounted on the DS inner fender.
*Dirty Dingo motor mounts are foolproof.
*Make yourself a check engine light and diagnostic port (see lt1swap.com and others).
*ICT Billet has a good selection of metric adapters.
*Like others have said, get the ECM, TAC module, wiring and DBW pedal from the same donor.

We're here to help.