ima be getting my spark plugs for my mustang and the reason i'm posting in here is cuz i have a H.O. form a 94-95 gt and i wanna know what would be a good kind to get. Also any kind of problems i may run into? the motor is in a 69 mustang and has been converted to carb. all is stock except for the heads. which are the 5/8ths spark plugs. i just gotta remember to set the wires and timing right. lol