I know stupid question but. What size are the spark plugs?... I tried to use a standard 5/8th spark plug socket but it wouldn't fit.
Or is it because the plug sits deeper and needs a deeper socket?... Help please.....

 

check the 13/16th one then they only come in two sizes

 

Alright thanks man!!! LOL, Yeah I couldn't remember the other size. thanks Grod101

 

not a problem............ remember to gap the plugs to 28.... best gap for the 4g63