ok my cousin has a 97 TA....Just fully ported lt1 heads,cam unsure wat size,headers full exhaust gear and free mods...We get the motor back in and running few days ago and the car is dropping cylinders BAD...at least 3..Brand new plugs,brand new opti,brand new wires...Im stumped it might be the valve train but Im very hesitant on takin those valve covers off again unless I absolutely need too bc its NOT fun as most of you well know...If anyone has any suggestions or other comments or anything really would help thanks...