You can't reuse the stock intake tube since it's made for a 68mm TB, the 74mm won't fit inside!
Making an intake tube is just a matter of assembling an aluminum tube and two silicon coupleurs
Mavis, we can't see the page :/
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ASE certified Automotive Master Technician.
Porsche Tech in France.
www.benautodesign.fr
Ben-Auto-Design : Performance parts for 9X6 / 9X7
1982 928 S Euro