i did a engine over haul on my 1987 gta such stuff as
Tpis mini ram 2 (fuel rails and pressure regulator included)
58 mm billet throttle body
Rhs pro torquer heads
tpis zz409 cam
tpis roller lifters/ rockers / push rods
tpis 36lb injectors
ngk plugs
Electromotive tech gt computer
electromotive coil pack conversion
crank trigger ect.
Had it up at a place called huttner enterprises to do the electromotive system to get the car running flawless and lets just say it was less than a terrible situation. 7 thousand dollars later and it runs like **** over heats wont rev past 3450 without shootin fire out the intake and exhaust so when i pull the spark plugs on it the driver side of the motor is super wet and the passenger side is beyond dry.So my question is what could be causing this Any ideas would help ........ Also I have the digital dash and my spedometer keeps jumping around like nobodys bussiness such as 30, 55, 164, 48, 30 while im goin 30 mph

 

Has it ever run right with new combo or is this a recent problem?

 

Do they look like they have been firing at all ; as in getting fuel?
If one injector bank is down ( not supplying fuel ) it could give some the symptoms you are explaining