Its a fair size pump to be honest I was tempted to put mine in the exhaust tunnel as mines not used anymore but you can fit it anywhere you want that it fits some people have fitted them inside the cab on kit cars. There's 2 different saxo pumps one with a fixed resivour one with a remote one. I went with the remote one as it gives more freedom where to mount the pump. I used the stock high pressure line and made my own low pressure line. Depending where you fit it you might need lines made up