Technical 1981 Spider 2000 battery size?

[TrknFld]

What size battery should I put in a 1981 Spider 2000? The one suggested by the "battery finder" at the auto part store looks like a monster compared to what's in my car right now. Can anybody help me with the specs of what I should get? Thanks.

 

[custard]

i would say if it fits it doesnt hurt to have a bigger battery.basically just measure the dimensions of the battery and get as close a match at the auto part store.
i like a bigger battery in my cars o if i can fit a bigger one then i do