I have a 90 d150, putting a carb 318 engine in it. I have an oil pressure sensor and water temp on the way. Is their anything else I need? I can't think of what else. This engine is completely bare when it comes to sensors and wires. It is a crate engine. The truck was originally TBI.

 

Those two should be it. Though you will need a fuel pressure regulator to dumb the pressure down to around 6 psi or so. Whatever carb you get should tell you in the manual what pressure you need. Something I'd really suggest, especially with a new crate engine, would be an HEI set-up. I got a distributor with 8 mm wires off eBay for I think $80. It made a huge difference on my warmed up 360. Everything is inside the dist., so just a one wire hook up.

 

Nothing wrong with the oe set up if it is in good working shape(electronic not points). An upgrade would be a msd6a. Made a big difference in my power wagon(78) Faster starts better mpg and performance.

 

That's what I love about the HEI set up. It's a night and day difference. Can't beat the price or simplicity �� But to each his own.