Will parts from a 1998 Pipeliner fit a 1978 Pipeliner, especially the clutch drums, bull gears, and power-down components?

[Frank Zimmerman]

Trying to figure out parts interchangeability between a 1998 Pipeliner and a 1978 Pipeliner. I have a rough '98 machine with a worn center pin and missing vertical travel parts, but I've collected a lot of replacement components from it. I recently looked at a cleaner 1978 Pipeliner and started wondering if the clutch drums, bull gears, or power-down parts from the '98 machine would swap over. Mainly hoping to add a power-down setup to one drum if the later-model parts are compatible. Looking for advice from anyone familiar with Pipeliner winch parts, clutch drum compatibility, bull gear differences, or older Pipeliner rebuild projects.