Agm Battery For 71 Tr6r?

The current (no pun intended) battery in my 1971 Tiger TR6R is a Yuasa YB7L-B lead acid type and it is dying. It measures approx. 5 5/8" L, 2 7/8" W and 5 5/9" H. There is room for a slightly larger battery.
I have AGM batteries in most of my vehicles and would like to find out which is the largest Absorbent Glass Mat battery that will fit. The original specification calls for a Lucas PUZ5A, which is NLA.
Does anyone have an AGM battery in his/her 71 Tiger? If so, what is the model/brand and how well does it fit?
Thanks,
Jim

 

I always buy the largest battery I can fit into my vehicles since I am not able to drive each one as often as I would like, ergo, each battery will be inactive for days or even several weeks. I keep a trickle charger on each to maintain a decent charge.
Plus my Tiger has turn signals and lights in addition to the twin coils.
I have found the MotoBatt MB9U battery as the best AGM replacement.

 

Obviously. This thread should be closed.