i was gonna get one cut out for my stock Y and just wanted to know what the diamter was on it. also does anyone know where i can get the clear lense that covers the guages mine got all scratched up? Gm discontinued them

 

well my drivers side tube is about an inch in diameter from top to bottom and maybe 2inches from side to side...basically its oval from the factory just get a new y with a cutout built into it.

lata
Bill

 

You don't want to put the cutout in the Y. Put it somewhere in the I which is 2 3/4" stock or 3" for aftermarket. A 3" cutout will work in either case.