ok, lets start at the beginning.............
forget the injector info as you have carbs ( blink missed this )
is max power not 169? i can only just make out pic.
since you have carbs you must have some sort of ign only ecu,
if it uses ford edis module then its good for 8k, most aftermarket ecu are at least that.
even if carbs are limiting it should rev over 6k,
as its not having issues reving to 7k then maybe rolling road backed off when asked to or power drops off (cant see it).
wrong ign map or carbs - either not correct could cause the power to drop off early, you need to get it on the rollers and get advise as to whats holding it up - fuel or spark