This is the EFI upgrade to convert your existing C10 Boyd Welding "carb" tank to an EFI version. The tank must have the large block-off plate in order to be upgrade-able. If it's an older tank without this large center block-off, it's not upgrade-able to EFI.
EFI upgrade include Aeromotive Stealth 340 fuel pump, mounted on drop-in assembly.
Please allow 2-3 business days plus transit time.