Where can i get a CHEAP Tach?

[BOSS]

Hey guys i am in need of a cheap tach for my brother-in-laws dump truck(69).he has a tach dash in the truck but told me if i got him just any tach to replace his that i can have the dash.I have even told him what they are worth and he is the one that has the purple 69 short fleet that i used to have.I've tried to tell him to put it in that but he doesnt want to.So i am in need of a cheapy tach and maybe cluster if you know where i can get one let me know.............Thanx