These injectors are flow matched to +/-1% for those guys that want a little extra precision. Set of 6 80lb/hr injectors (Siemens/Continental) with matching chip (TT Classic v5.7). These may look skinny but they fit perfectly in the Turbo Buicks. Good for cars looking to go 9.80's to 11.0's in the 1/4 on race gas, or down to around 10.50-10.70's on E85. Requires no ECM modifications (besides a matching chip). Very good street manners for an injector this big, almost as good as the 60's. Be aware that most single intank fuel pumps can only supply enough fuel for 60lb/hr injectors. So if you're only using a single in-tank Walbro 255lph pump, then there's really no reason to use the 80's unless you plan on upgrading the fuel system later.