Our engines and Clutches and Flywheels are identical... Actually our setups on all out performance add on are nearly identical. Only difference is the turbo kits and exhaust.. And I don't have the oil cooler... I run a lot faster than @MACAWS so i get more wind on my engine. No need for an oil cooler ....
As you already know, I'm very interested in having the same DDM motor installed. I have heard your exhaust (to some degree) in the videos that you uploaded and it doesn't sound like its too loud or obnoxious like I would imagine a free flowing exhaust to sound. I like my Alpha side exhaust as its nice and quiet so I can hear my stereo and of course the blow off valve but from you discovered, its very restrictive above 10psi. What exhaust are you running and who makes this "port system" that opens at high rpm i was reading about in your thread? - very sorry to hear about your engine. Just read about it 5 min ago after posting my last thread =(