Thank you for sharing, it's a lovely render
However, I'm going to accuse you of cheating
The only engines that would fit in those nacelles would be turboprops
I know Crimson Skies is fantasy (or, at least alternative reality) but that takes the aircraft too far out of period for me. This is a personal thing and NOT meant as a slur on your work.
My view of the original Gladius (all I have to go on is the Z&B PDF) is that it mounted some (rather small) V8s about the wing spar with the undercarriage below the spar which is how it got away with such short nacelles. My de Havilland engineers, faced with having to re-engine an existing design, went for the underslung option rather than mounting the engines in front of the wing spar which would have radically changed its centre of gravity (and caused other problems).
I note that your design has external bomb stowage whilst I went for an internal bomb bay (hence the deeper fuselage). I'd be happy to go for external bombs if people think it's more appropriate.
BTW, I'd be happy to share my 3D models with you foxmalcolm if you'd like to create renders from them.