This distance comprises about 4 or so miles. The trail climbs and drops inspots. When you come to the junction of the PCTand JMT at Crabtree, continue up following the JMT to Crabtree. You have about 1 mile or so until you reach Crabtree. Whitney Creek runs through it.
Fire is permitted, and there are bear boxes and lots of campsites.
The distance from Crabtree to Guitar is about 3 miles and about 1800 feet elevation. Water along the way. You can camp at Guitar, but I normally camp beyond. If you travel up the next ridge over looking Guitar, maybe half a mile there are some nice sites built into and surrounded by rocks. There is a stream there, small.