Anybody put a 19 tooth on the front of a destroyer? What changed in the 60 foot?

I believe BadVR did, on his "R"

It went 6.1 @119 so I guess it worked..........

what was your consistent time before the sprocket change?

Before the change 6.40 @109

I have a 19, but I have not used it yet since PMFR just finsihed up some 18 tooth sprockets and I was running that up front with a 54 tooth in the rear. The idea is less weight and mass while gearing about whould you get with going to the 19 in the first place.