Do all oil coolers employ a sandwich plate for supply/return feeds..?

How is the oem cooler on a spec c plumbed for instance..?

 

Jasonius if you check on Litchfields site in the shop they have a picture of the oilcooler and take offs Im almost sure its an all in one unit not a sandwich plate I should have had a look last time they changed my oil

 

All the ones I've seen do. A sandwich plate with an integral thermostat that opens at 80C is about as good an oil cooler take off as you'll ever get.