That is a Carter BBD, I have a very low opinion of Carter BBDs, As they wear the main shaft which is hardened steel wears out the holes though the alloy body causing a vacumn leak and is impossible to find or fix. It will run that way but it tends to run with poor mileage. Carters were even used on the YJ. As they were used through jeep production they cot more choked with a maze of vacuum hoses emissions BS and even electronically controlled stepper motors. I consider them the bane of my jeeps existence until I put Weber's on everything. Make sure your fuel lines are in good condition and wrap them up with tin foil to protect them from heat, your manafold will tend to cook all the rubber under hood leading to vacuum leaks and at worse fuel leaks.
I have a easy half dozen of these things laying around. One of them is a little crispy since it set the jeep on fire once. I have completely converted over to WEBER carbs which require a adapter and a fuel pressure regulator. Alternatives are motorcraft or some other carb. You can open up your options with a offenhauser intake which works with Holly 4 barrels or Q-jets. THe ultimate would be a 4.0 fuel injection kit, or even a 4.0 head and fool injection off a Cherokee but the swap is either involved or expensive. If you go the Cherokee rout, get the wiring harness and exhaust system off the donor too. Then you either need to make a crankshaft positioning sensor potions on the transmission of use the FOOL injection kits vibration dampener.
