Imperial Guard: Gorgon Project

Hello all, Slick here. Here is a preview pic of the next conversion project I'm working on. I acquired a Baneblade in trade and decided to see if it would be possible to scratch build a decent Gorgon out of it. After some initial planning, I think I've got the design ideas where they need to be. I ordered a couple of quad-heavy stubber Sabre platforms from FW (my Gorgon is going to have a bit more firepower). The only part I haven't figured out yet is making the giant ramp. Not sure what to use for parts. Ideas are welcome. I'll be posting wip pics as work progresses. Comments welcome!