I guess I forgot about the last thing I was going to say... seeings how they use a crush gasket... if you use a new one or don't crush it ... or do crush it down flat... you can change the temp of the oil about 10-30 deg.. because the plug is either going over sooner with the gasket crushed or later with the gasket not crushed... so we have found a way to vari it just slightly by either over tightning or not real tight... some have used two gaskets to bring the temp up even more... on the racers...
I found Pacfic oil coolers... want the address...
http://www.oilcoolers.com/
oil coolers are the most overlooked item when it comes to running too cold or too hot that their is... check out the site and they take you thru their checklist as well as some of these sites also have lots of good info on them about the item... care and maintance and cleaning...
Good hunting... GMAs...