Will I need to upgrade the transmission if I put the supercharger on?
It just really depends on the condition of your transmission and torque converter and how many miles you have on them both. Technically speaking, a factory transmission in good running condition with only a moderate amount of miles on it should be able to handle the out-of-the-box power outputs of this kit. However, if you're unsure of your transmission's maintenance history or if you know it's seen better days, then an overhaul or upgrade is strongly recommended.