If i get a vintage air setup or the likes, do they mount in the existing old heater control holes in the cowl? i guess what i'm wondering is can i smooth out my cowl now and not regret it when i try to put in A/C.

second, what do you guys think of this color setup? someone on here did this for me on the House of Kolor software and i love it. we are torn between this or going with yellow. Both have been overdone i know but this is what its come down to, i gotta get the motor painted and the bottom and the cowl on the cab painted.