I converted my Jeep Wrangler to a TBI system from Turbo City. It included the required electrci fuel pump. EFI requires a much higher pressure, 20-40 psi than mechanical units which max out at 8 psi or so.
My install went easy and the driveability went so much higher from the leaky Cater 2 barrel. was it worth the $1,600 and 2 weeks of my time, maybe.