You can dig up all the stock linkages and shifter, and just do a complete transplant with donor parts. Or You can get an aftermarket cable shifter and do it the easy way. With a cable shifter, you just need a hole in the floor big enough for the cable to slip through. Also, with a cable shifter, you can mount the shifter anywhere within reach of the cable itself. Then if that cable isn't long enough to put it where you want it, just buy a longer one.
