redline guage pod

so i am trying to make a redline guage pod for my scamp in autocad. they will be made outta abs plastic and i am going to make a few of them. should i put holes for guages in now or if i sell them just let you cut them out? and if so what size of guages and how many and where? i was thinkin a speedo, tach, and 4 smaller holes for other ones. then if i do get them made how many people would want them? and how much would you all pay? they will just be black and probably smooth. here is a pic of kinda how i want it to turn out just with out the guages till you put them in lol

Gauge Layout.jpg