back porting rails 2 json serialization

I'm working on a project with a large json api component. We are not ready to upgrade to rails 2 at this point; however, I was wondering if anybody had thought about backporting the rails 2 json serialization back to 1.2.x. I created a quick plugin this morning just of the ActiveRecord and ActiveSupport files involved in the rails 2 json serialization and it seems to work. Has anybody else considered doing this or know of a reason why it might be problematic?

Thanks! Will

Before proper json support was added to the rails trunk, I was using the jsonifier plugin. It worked fine, except with serializing datetimes (but I think that was a problem with rails)

does JSONifier support serialization of included associations and instance methods as the rails 2 code serializer does?