Hello. I have a 1970 Plymouth GTX, and I need to know what size bolts to get for the inspection cover for a manual transmission. I have some bolts with a 23 on the head. Are they correct? I don't know if their too long. Thanks.

“Working on cars teaches you patience... and every curse word imaginable.”

1970 Plymouth GTX -- A true gentleman's coupe, but a serious muscle machine.