Hopefully I am not going backwards, I am having a set of the military triple square ID ones opened up to match the diamond just on the opening no machine work to the internal side of the cup, Head gasket to lower compression to 18:1 or so.
I did the road draft tube for a while with the CDR still in the valve cover and my rear main seal started to weep. I didn't want to fog the whole inside of my freshly cleaned and gasket matched intake. I ended up W/ a Home brew catch can made from a AG sprayer filter canister w/ 1" ports mounted...
I've been running a CKO Holset description in sig... for about 3 years towing and pretty routine long extended pulls 20-25psi and occasionally bumping off 30psi with no problems yet.
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