OK. the table is supported by two angle brackets at the back. the bolts in the table are secured with wing nuts so you can easily put the table down if desired, to make a bed. the front is held up with the aluminum tube, which just sets in place in the wood blocks, top and bottom.. I made a new table top for ours several years ago, but as I recall I did use the old one as a pattern, so dimensions should be correct as originally made. 26.5" wide. forward edge is 32" and rear is 33 3/4" (angled at the back edge).
As to the divider, I was just about to cut my old one up for firewood the other day but must have gotten side-tracked, so you're in luck
. One of the main reasons you see them taken out is so you can extend the v-berth so actual full size adults can sleep there
. different ways to accomplish this, but in my case I added a hinged board so it can be raised to access storage. very handy and I would never go back but priorities vary depending on your needs. the original divider was just held in place with a couple small angle brackets and bolted along the bottom edge. left edge of original panel is 33" high. it's 22 5/8" wide along the bottom edge.
hope this helps. We LOVE our Mac.