87 with 68k original miles. should I replace timing chain while its stripped?

[weider1717]

Just stripped it down and replaced the water pump and thinking DANG I should have went a step further and replaced the chain.

think it would be a waste of time at 68k miles or no? i plan to drive it more from now on.

it's still stripped manifolds etc off just due to wanting to restore them so I have plenty of room trying to see if I wanter to yank that pump back off and do it or not.

will I have to drop the oil pan and change that gasket if I do?

thanks