Oh yeah, a single piece removable hard top would be pretty sweet. It should work with no problem, just make sure you have a good seal for when its in or it'll leak. And you are prolly gonna need to strengthen the whole body, cause without the support bar, it'll have a ton of more body flex and that might cause some major problems for ya. But i bet if ya took it somewhere they could do it with no problem, as long as you can supply them with the resources they'll need, or maybe you'll get lucky and find one that'll find everything you'll need for it too. You will prolly have to modify the rear hatch trim though to accept a place to put the removable top when its out. I'm thinking just notch out the existing trim for it set down in and make some sort of strap or velcro for it. But thats just how i would do it. Its your car, have fun with it however you wanna do it. (get creative!
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