That is a extremely broad question because of how many different applications there are. Some mount on the drivers side which means battery relocation among other things, but I will assume what you are talking about is a basic passenger side kit. Count on not only doing the physical installation of the supercharger (brackets, piping, belts, etc.) but also figure in the time it will take to upgrade your fuel system (in tank pumps, in-line pumps (t-rex - those take a little while) injectors, fuel pressure regulator or FMU, etc.) I would say you could get one installed anywhere from 6 hours (my buddy and me with his Kenne Bell, more or less an upper intake swap) to about 10 or twelve hours. Maypo hit it on the head pretty well, about a weekend if you have any mechanical inclination.