Suits RB20/RB25 Non Neo and RB26 engines. Uses genuine Hitachi VR38DETT coils (R35 GTR). Includes bracket and connector plugs. Designed so that the bracket and coils can be unbolted and removed from engine in one unit. A huge upgrade in terms of spark energy over original RB coils. Factory wiring loom must be modified to suit, or a custom harness installed. Standard Igniter/Ignition Module must be removed. Coils have built in igniters. These coils run an increased dwell time over factory RB coils, therefore must be used with a programmable ECU.