Which fuel injection system for a BBC?

[Last Ride]

Hey all, just wondering if anyone out there give give me a run down of options for fuel injection on a BBC. The obvious example would be the Ram Jet unit that is on the RamJet 502, but at $3300+, it carries a hefty price. What other options are out there? I wouldn't mind a RamJet 502, but I am researching aluminum blocks rigt now to keep the weight down. Thanks for the help!