the 75 manta
/1900 injection can be great for a reliable car if you do the car to 75 spec for the cam as well (they work as a set ) or if you want to get more from the motor search for "megasquirt" for a tun
able system to work with the 75 inlet or throttle bodys
as said if you do a search there is a host of stuff here for it ,search button is on the top line of the page