I saw this thread a few months back and with search being down I can't really make use of it. Does anyone happen to have the link saved? It was about someone putting a small aftermarket tach into the stock cluster where the stock tach used to be. Thanks

 

I have a 2 5/8: autometer tach on my pillar that could easily be put in place of the stock tach. All you'd have to do i cut a sheet of acrylic or something to the same shape as the oem tach, andthen cut a hole to fit the new tach. Easy peasy.