1976 silverton is useing aqua tachs. any body know if there still in busines?i looked on line dont seem to be.heres my prob need new tach.3 inch hole the ones i see that say 3 inch are not they are 3 and and 1 eighth i have tried faria and telaflex.had to send them back as you know this is metal dash thoug to make it bigger.the aqua i took out measures 3 inch right on the head. any help? thanks
