Carbs

They're not actually throttle bodies but just
old fashioned carburettors. I've not had anything to do with T/B's but I'm under the impression that they operate along with a set of fuel injectors, the T/B's purpose being to regulate the airflow?
All that's needed is the carbs & manifold, a pushbike brake cable for the throttle cable (fits with a bit of fiddling & cutting the white plastic bulkhead bracket), a fuel pressure regulator (+ ideally a filter) I had a job to get mine running smoothly which turned out to be the maniflod not being flat so letting air in through the gasket faces but help from Boggs Bros sorted it.
Dipstick & tube might need bending a bit with dipstick end smoothed round. New crank breather arrangement, tapping off #4 manifold runner for brake servo (works fine on only one)
Will be fine with standard ignition & fuel pump - some use leccy bike fuel pump.