Throttle Body P&P/Bump stop mod
Good luck.
And putting the tubes in the holes does nothing for hp.
I didnt put any tubes in mine either...... This was my finished product.
https://ls1tech.com/forums/generation-iii-external-engine/604476-ported-throttle-body.html
Theres a write up with pics on the how to for the bump stop mod.
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