folks, does anyone here has experience installing this particular item from wahler - is it a reputable part? http://cgi.ebay.com/ebaymotors/BMW-75-Degrees-Thermostat-E30-E34-318is-318ic-525i_W0QQitemZ8038833377QQihZ019QQcategoryZ33604QQ rdZ1QQssPageNameZWD1VQQcmdZViewItem if it helps lower my bonnet temp in the hot humid tropics, i'm inclined to get one. feedbacks/brickbats anyone?