PSI Conversion on Instagram: "Want to stay classic without feeling old? With PSI’s classic intake kits + throttle body adapters and full LS engine controller kits you get that vintage Chevy small block look with modern EFI reliability. Our Classic Style Single-Plane LS Intake Manifold Kit gives you everything you need: intake, fuel rails, air-cleaner adapter and 4150 flange adapter; plug-and-play for Gen III/IV LS or Vortec engines. That means you get modern fuel injection, drive-by-wire throttl