Hi, so I've been searching for information on the 1999-2000 LS1 injectors 12555894. While I've been able to get some of the data on the stock injectors I haven't found the details. Anyway, what I'm trying to do is use a LS1 manifold and injectors on my 1964 Malibu project. I have a 2005 LM7 engine from a Tahoe. I also have a Elgin (sloppy Stage 2) cam. My question is as follows: I found the injector data for the 2000 Corvette/Camaro (flow rates) and want to make sure whether I should change my stock flow rates for the Tahoe to these new numbers. I noticed they are a bit higher numbers. Hopefully, you guys can give me a definite direction for the first start. Thanks, Keith