I've been taking my good ole time putting this together, but just to update, I decided I'm going to scrap the use of the JD rear head and I am now going to use the GH rear head for the Sanden 7H15 compressor.

The GH rear head has the similar manifold pad as the R4 setup. The advantage is that it can use the same hoses as in the stock with a little modifications. The GH rear head will put the Sanden compressor 90° towards the passenger side and will use sealing washers to seal the connection. In researching more, I think the QC head would use the same type of O-Rings as in the original Harrison R4.

Here are pics of the GH rear head setup.


Shot of the GH rear head.









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