Nitrous Oxide System - NOS Dry Nitrous Injector Plate for GM LS with Sniper EFI Race Series Intake Manifold (12536NOS)GM LS Sniper EFI Intake 1,000+ HP Capability!! Designed exclusively for the best distribution of nitrous on GM LS engines. The injector plate system will sandwich between the top plate and bottom base on a Holley Sniper EFI Race Series intake manifold. Eight 1 8 in. machined orifices will spray nitrous along the center axis of each runner for optimized distribution. NOS GM EFI Nitrous Systems are the best way to get a power increase in your fuel