[iluv69s]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: William</div><div class="ubbcode-body">Dual exhaust cars usually have N10. </div></div>

Would that be true on verts also?? Since all verts had the ds exhaust plate welded to the frame rail didn't they?

I assume the options written on the firewall are for the assembly line workers to know any alterations to the stock body at the Fisher plant..that is: M-22 4 speed cut-out, Z-22 RS hole piercings in firewall and trunk for hoses, etc. D-80 hole piercing for rear spoiler in decklid...therefore N-10 would be needed to show the plate needed welded on a hardtop...may still be present on verts also, but seems not really needed.

Dont know what is the norm..I do not see N-10 anywhere though. I will do more investigating and cleaning soon..and I will bring my camera and take some better pics.