What to do with leaky N-1200SC Cells?

[nvxwax]

OK I have some Sanyo N-1200SC cells with a un-built RC12L i am working on, Apparently the guy bought everything to run it but never finished it. I'm not sure if they are the same era as the car but i think they will look good.

I was going to use them in the 12L for display but they are leaking, Does anybody know a way to maybe clean them up and seal them so they can still be used on a shelfer, I really do not want them to leak all over a new car.

[gjeeper04]

baking soda water will neutralize the acid, however I have no idea how to reseal them other than maybe hope they are empty.