I haven't, partially due to cost, but if you do I suggest using a straight-thru type electric pump. Mezier makes a couple of this type- one of which fastens directly to a radiator inlet. Given the Pantera's battery placement, this seems like a good idea and I'd like to test one, but not at $300. So if you do, please advise how it works under around town and long distance high speed cruise conditions. Thanks.
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