No, the reservoir itself wasn't the problem. The mounting bracket that holds it and the intake box was the issue. But part of the problem is also that the instructions that come with the Volant read more like a glorified parts list instead of instructions. I had sold a Volant to a customer (the new design) who couldn't get it installed, so I shipped him an aFe Stage 2 and had him ship the Volant to me. After spending about 30-45 minutes studying the instructions, I figured out where everyone was having issues with the installation. First, they weren't using the relocation bracket for the remote start sensor so it would get all jacked up on top of the new reservoir. Second, and I am not 100% sure what it is called, but closer to the windshield there is another bracket that mounts on the lip of the quarter panel. Well, most people were trying to simply remove the nut securing that bracket, sliding the intake mounting bracket tab over the top of the "stud" and then trying to bolt everything down. It will NOT work like that, it just won't fit. However, if you remove that factory bracket AND the stud itself, slide the lip of the intake mounting bracket under the lip of the quarter panel and then reinstall the stud and factory bracket, it fits like a glove. The reservoir is close to the brake master cylinder reservoir, but there is about a 1/4 inch between them and everything else lines up perfectly without modification. The number one issue with the Volant in my opinion is a lack of quality instructions that the average DIY'er is going to be able to follow to complete the installation.