Pilot bushings are only used to support the end of the input shaft on a standards trans. You need to make sure flex plate from the motor your swapping in will bolt up the the torque converter of your trans. So no you do not need a pilot bushing. Good luck with your swap.
88 YJ 35's 8.8 rear, family style roll bar, ax-15 external slave conversion, Custom double D fab dash 4" of lift taurus fan, Head light wiring upgrade, MSD 6al, JB conversions SYE, 258 with RV cam, Long tube headers, Borla exhaust. 1"mm, Auto meter gauges.