||Been searching through posts, and didn't find the answer I was looking for. I have an 89 Fairlady TT and wanted to start doing some upgrades. On my previous 93 I did the Z1 upgrade, but they no longer sell it. I have seen the RobZ, but no machining service for plenums (that I know of).
So, two questions,
1)Is the TB upgrade really worth it?
2)If worth it, any recommendations on TB and machining service to match them up?