I just replaced one of my under seat units. If was easy just like Mark said it was. I did have someone in Le Marin do the bending with a jig he had used before. In my case, I replaced the original with an Italian one, a Vitrifrigo model ND50. It work perfectly.
Regards,
Miles
s/y Ladybug sm216 anchored off Anse Arlet, Martinique.