I have one to sell, sorry it won't be cheap, but as these chips are super hard to find you might get one out of 12 Rivieras searched....and just finding one Riv hoping there's one in it is a treasure. Still don't understand why Buick never put em in our TR's. I should probably keep it for a spare for the 2 TR's I have, but anyway $55 will do it b4 I put it on E-bay...Again, hate to be such a prude but I've given stuff away to help others here and these are super rare