If you do install the 4200 and decide to run EFI I can supply a good base tune up if you choose to run megasquirt. Apart from wiring the EFI box in with my tune up file you should be able to get in a turn the the key.
Its also possible to have megasquirt only run the ignition and still use your carb. I have a boost tune up now that allow you to use the stock coil on plug ignition and stock crank trigger pick up. So basically run the crank trigger input to the box, connect up the coils and run 1 vacuum hose, +12 from the key and ground wire.
