Idea: Movie Nightwatch Prime to Ultra Magnus

I just picked up Nightwatch Optimus Prime yesterday, and I love the idea of making him Ultra Magnus. I suck at painting, so the most I can hope fo ris some mild detailing to make him more Magnus-like.
Now I know this is probably blasphemy and I should be struck down or smote or something, but here's the big idea, to make him into a car carrier, but without a trailer. Like this:
That model appears to be roughly the right size (1:32), so I'm buying it to yank the car rack off and fit it onto NW OP/UM. Can't tell if it's plastic or metal, but the site says "die-cast cab", so the car rack could go either way I suppose. I hope it's plastic so it will be easier to work with.
My ultimate goal is to make the car rack transform as UM's armor, but for now I'll be happy to just have it fit onto his alt mode. I thought of scratch-building it, and I might, using this model car carrier as a guide and for parts like the ramps, etc.
I think the bright chrome of the car rack will contrast nicely w/ NW Prime/UM's dark colors. Here's a quick chop:
Comments please!
Now I know this is probably blasphemy and I should be struck down or smote or something, but here's the big idea, to make him into a car carrier, but without a trailer. Like this:
That model appears to be roughly the right size (1:32), so I'm buying it to yank the car rack off and fit it onto NW OP/UM. Can't tell if it's plastic or metal, but the site says "die-cast cab", so the car rack could go either way I suppose. I hope it's plastic so it will be easier to work with.
My ultimate goal is to make the car rack transform as UM's armor, but for now I'll be happy to just have it fit onto his alt mode. I thought of scratch-building it, and I might, using this model car carrier as a guide and for parts like the ramps, etc.
I think the bright chrome of the car rack will contrast nicely w/ NW Prime/UM's dark colors. Here's a quick chop:
Comments please!