The injectors on a non-sequential system pulse half of them at each revolution of the engine, unless you've got some really oddball system I've never heard of. At least all the GM systems I've been repairing and teaching for the past 30 years work that way. A sequential port setup has the injector nozzle pointed at the tulip section of the intake valve, and fires the injector a fraction of a crankshaft turn before the valve opens. This results in a fog of fuel behind the valve at the beginning of the intake stroke, which gets drawn into one cylinder as the valve opens. In your situation, it would probably be much simpler to go with a throttle body injector since there's no need to dedicate a single injector shot to any particular cylinder. TBI systems are much simpler to wire and control, also.
Jerry
