Tom, I have the Mulfab radiator and fan conversion on my Plus 8 and it works very well and a far more efficient radiator, the fan only runs in stationary traffic, they are a very professional company to deal with and are very well established.
2009 4/4 Sport Henrietta 1999 Indigo Blue +8 2009 4/4 Sport Green prev 1993 Con Green +8 prev