Yeah, head studs are definitely in the plan. I've already got most of the parts for my turbo (Garrett T3 off of a Mercedes that I plan to pilfer the turbine housing from and a T3-based Hitachi HT-18 off of an RX7 Turbo that I'll take the compressor housing from). I wish I had known what cars came with T4s from the factory before I bought all these turbo parts. Oh well. Would a T4 compressor wheel help at all or is it the T3 housing itself that's inefficient? I'll make a new thread with pictures of my "junk" turbos tomorrow.
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