[chrismorse]

The mocal thermostats are good, but they do not have the high pressure bypass to keep from blowing up your cooler when pressures get high.
The factory thermostat incorporates a high pressure bypass and many think it a worthwhile safety feature.

I have a Mocal thermostat on my 77 308 Ferrari, because the stock set up had NO thermostat and it took about 2 weeks for the oil to come up to temp here on the cool California north coast. At the time I installed the new cooler and ss lines, I was unaware that Porsche had a pressure bypass, or I would have gone through the work to adapt the fittings.

good luck,
chris