Thank you. Well since im new to the Mighty Max scene ill just start with some swaps that I know about

Montero SR Axle swap - I imagine the main thing here is parts to pull and welding leaf spring perches on
Rear Coil swap - Nothing I would do but I know some people prefer that
Sport gauge cluster - probably the easiest one
Solid front axle - love 'em, but I am ooover doing the maintanence on them
Front & Rear Brake swaps - not sure what upgrades are out there, but i'd be curious to learn about that personally

I think these are the simpler things that would be good to start with.
I would love to hear any other suggestions though. Perhaps if these turn out well something bigger like an engine swap can be put together.