Intake

At the moment I am in good ol' Iraq, but literaly a few days befor "they" told me I was going, I picked up a 351w from someone I know. It came out of some big ass van (cant remember what kind). I got the motor, wiring harness, computer, and an AOD tranny all for only $300. My car is an 86' so its fuel injected, but I was wanting to run a carb on the 351. I read that the FI is a better choice all around for the 351, but I know that you can get pritty much the same power, and have good mpg with a carb. Well, as long as you keep your foot out of it...That and parts wise, FI will cost a lot more to upgread, but already having the car wired up for it, I was wondering if it would be worth swaping to run on a carb, or just stick with FI??? I already know about the hole gas-tank/fuel-pump thing, but other than striping out all the wiring, is there anything else that has to be done? If I stick with FI, I pritty much know what I would do as far as injecter size, and intake, but was wondering if I should go with a 75mm TB, or go with a 90mm? Im shooting for about 450hp. I already know what heads/cam, and bottom end upgreads I will be doing, but keep going back and forth with the intake setup! Hearing what you guys think will help out a lot!!! Thanx guys...:iceslolan