Thank you for the tips. The existing holes in the floor is actually in perfect alignment for my set-up.If you pull up the carpet you'll find 4 bolt holes going directly into the floor. On both my D1 and D2, I used these to securely anchor my base piece of plywood and built off of that. I also added tie-downs to these points, recessed into the plywood base.
Thanks. That's actually the plan. Easy access/removal when not in use.You're going to want to keep it somewhat easily removable in case you fuel pump goes as the way that's setup you can't access it now.
r-
Ray