Does anyone know what the largest size battery besides the stock 51r, can we fit into our first gen Crv's?

 

Been looking at this too.
I was browsing through the interstate battery catalog the other day and it looks like I might be able to stuff a bigger one in. The MT-56 looks close and would be a decent upgrade with 590 cca
740 ca
95 rc

That battery messures.
L 10
W 6
H 8-1/4

Stock measures
L 9-3/8
W 5-1/8
H 8-7/8

 

+1
In these low temperatures the stock 4** CCA has Not been very easy to work with. Was also looking at interstates. 590 would definitely be sufficient, as long as it fits.
Need to find a local dealer and just plop one in to see if it goes there with no issues.

 

I modified a full size optima to fit in the 96-00 civic. Should be the same