For an off the shelf solution maybe 4 of these marine battery packs
. They are 25.9 volts each and 2.6kwh, so 4 of them connected 2P2S would meet your requirements depending on how quickly you are going to be discharging them.
Otherwise you need to build it yourself or get it built. The trap with lead acid batteries is that the stated capacity is for a 20 hour discharge. When you use them on an EV with say a 1 hour discharge you will lose capacity through the Peukert effect. The amount varies, but as a rule of thumb, say 50%. So your 160ah cells are suddenly only good for 80ah. Then when you look at cell life vs. depth of discharge you find out that more than 50% discharge starts to shorten life, so now you are down to 40ah of usable capacity from a "160ah" pack. Of course if its a TV production with a few weeks of shooting then maybe you aren't bothered by cell life.
The other option is a lithium pack. Unlike lead acid, lithium cell capacity is usually rated for half to 1 hour discharge. 16x 160ah cells would probably suit your requirements. Add a bms and charger, build a case and you would be ready to go. I might be able to help you out with this, pm me.