GTO's with oil coolers

[OutToWinPAHC]

I run a LS6 in my 240 with a GTO pan. I ordered a Lingenfelter oil cooler adapter for the LS1/LS6/LS2/LS3 engines. The part comes today and says will not work with 2004-2006 GTO's. I got under the car verified that it wont work.

The site I ordered from did not list that it wont work on the GTO, but other pages do so its my fault.

But I searched online, could not find anything other then a sandwich block, is that the only other option? Please let me know.

If you do use a sandwich block can you verify the thread pitch/size needed.

[OutToWinPAHC]

So such luck, I am all over on this, I havent found a person yet