This one will work if whatever you are hooking it up to in front has an output shaft with 27 splines. AW4, 242, 231, etc. I don't know what your 86 (assuming) has. This one has an 8" shaft, but they make them even longer if you need one. Don't think you will. It's cheaper than having your driveshaft lengthened.
It also has longer the u-joint ears in front that prevent u-joint binding with taller lifts that cause larger u-joint operating angles.