I know this post is old, but I am trying to get more info on the head modifications for the oil feed. I have blown my S14 SR at Irwindale during the FD Proam Finals, and decided to go the S13 block for added convenience in the future, if any engine problems were to occur at the track. S13 blocks are easy to come by.
All pics of the oil feed setup and or anything you can provide will help. Thanks.
-Trent
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