Nah, there's nothing in the middle of the rail really.... The cold start injector is in the manifold beneath it...
http://www.cygnusx1.net/Supra/Librar...spx?F=2211&P=2
Do you know which brand and which type of MLS was installed? (If you say HKS stopper, forgive my laughter... and start saving to replace it in a couple weeks.)