Have you ever altered or shortened a cable before?? You will need a new barrel end for the cable because the one thats on there will just melt........basically cutoff the barrel, remove the 90 degree tube off the cable, cut cable to proper length, and the solder on a new barrel............and bobs your uncle
There is lots of info on shortening cables, which is what in essence you are doing, just not returning some hardware to the cable and then using what is on the throttle housing