Rallye dash tach options ?

alright, I know I've read something on this before but am coming up short on my searches. I have my cluster apart to have the Speedo and fuel gauge repaired. My car is not tach optioned and I want to put one in the factory spot. Besides ordering the repop factory style gauge, has anyone successfully mounted an aftermarket tach ? I was looking at the Stewart Warner 82171 and painting the needle orange. It will match the other factory gauges pretty damn well and it is a quality unit. Thanks in advance !