After finding a group27 sized 6V agm I got a set.
They are 200AH 6v made by haze battery for Electric vehicle use.
I installed the 6V's in series in my Pleasure way traverse van . A perfect fit, finally a decent battery capacity to run off. I had a sz 24 agm before (came with the van)..
The haze group 27 Agm 6v's are are 250 Canadian each.
From what Ive seen a single lifeline 27 is about 350 is usd each.
So the haze are a pretty good deal in canada .
Two 6v inseries is a easier to charge setup and has less potential for damage than two 27's in parallel . In parallel if one battery goes down the other may be overcharged =dangerous and expensive