Fits for GM 200, 200C, 200-4R TURBO 350, 350C TURBO 400, 425, 475 GM 700-R4 GM 4L60 GM Allison - 540. No need to remove the pan. In most cases, even not necessary to lower the transmission.
Transmission Shifter Seal Remover Installer Tool w Seal For GM Chevy 4L60E 4L80E
GM Transmission Shifter Seal Remover Installer with Seal Tool Turbo 350C 350 400
Transmission Shifter Seal Remover with Seal For GM 4L60 Turbo 400 350 300 700-R4
Miller Tools 6783 NV4500 NV3500 Transmission Shifter Lever Remover Installer
DD13 W541589023300 Front Crankshaft Seal Remover Installer Tool For Detroit DD15
3164660 Rear Crankshaft Seal Remover & Installer Tool for Cummins 3.9L 5.9L 6.7L