I installed one of these last week with favorable results on my 71. I've done the cooling mods but it still ran a bit warm on the occasional drive home from work in silicon valley commuter traffic. By the temp gauge (moderately scientific) it lowered it by something like 10-15 deg at 0 to 10 MPH.
For me well worth the ~$100 and 20 minutes to install.
Thanks Scott!
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