Proflow's Fuel Injection Plate eliminates the need to replace or modify your non-EFI intake manifold, providing it has a 4150 and 4500 bolt pattern. This plate allows you to utilize up to 8 14.29mm ID O-Ring injectors. Long (60mm), standard (48mm) and short (34mm) injectors will securely mount between the fuel rails and plate as the shafts holding the rails are fixed with 2 bolts fastened through the shaft rails. Long injectors mount directly to the plate and rails, while standard and short injectors can be used with the provided injector adapters. Block-offs are also available to plug any unsused injector ports.