I borrowed Stanley Steamer's Interstate shocks for a few weeks while
I was waiting for my Progressive 440s to be rebuilt. I can't imagine there's be a
problem having an OEM Interstate shock on one side and an OEM Tourer/STD
shock on the other... maybe set the Interstate one softer than the Tourer
one since Interstates are a little different because of the Interstate's extra
weight... you'll really appreciate your Progressive shocks when they come
back

-Mike "just because I don't think it would matter doesn't protect you from a flaming death

"