TMNT 1987 Turtle Van, roof opening mod

Few days ago I've decided to try and make the roof on my Turtle Van openable, so here's the result. I haven't used any rare and uncommon pieces so you should be able to recreate it if you want. I tried to make the roof open while not breaking the look of the van when the roof is closed. It's just one grey stripe, that matches the silver motif on the van (I lack more dark green plates). The roof doors are a bit flimsy or wobbly, but they do hold the position and are not falling off at any point. The hinge assembly is at just one corner of the roof doors so that makes them a bit unstable. You can see on the pics which parts of the roof are now removable.
I've tried to capture all of the changes I made to the van over the years in these photos.