Moh & Maddie, I see you have a 25' Excella and your asking about a Queen bed. I just finished the install of mine and will be doing the new drawer stack and night stands this summer. So, you currently have twin beds and have external and internal storage under each bed correct? First question is do you want to keep both? I elected to keep both internal and external which ment that I would NOT be able to walk around the bed and it would be a crawl over. See my photo's on www.yeargin.com
down at the bottom under Hobby Airstream. If that is what your looking to do then I can give you some step by steps and help avoid the issues I had.
Post back to the thread and let me know where you want to start.