Battery for 1000 Le mans

Does anyone know of a non lead acid ie. dry type battery that has exactly the same dimensions and terminal positions as an original fitment battery for my 1989 1000 Le Mans (also fits 120 Jota/R100GS)?
Regards Roger Green

I think most non L/A batts will be smaller,I fitted an odyssey,same length and height but half the width,turns over much better, pc 680 I thinkā€¦

I have just recently fitted a cheap AGM battery, same height and length, about 2/3 width. The connections bolted straight on, no problem.