Well maybe 'evolution' was the wrong word, we just seemed to have a similar idea with the extension off the rear of the saucer and the engineering hull (in your case) or nav deflector (in my case) sitting down under the middle of the saucer.
Seeing yours with the two nacelles kinda makes me wish I'd done that with mine, but it was my first try at scratch-building and frankly the idea of making two nacelles and having them end up looking the same gave me a case of the screaming willies...
Seeing yours with the two nacelles kinda makes me wish I'd done that with mine, but it was my first try at scratch-building and frankly the idea of making two nacelles and having them end up looking the same gave me a case of the screaming willies...