I could say yes, but tbh I don't know. I didn't plan for that, but Ranae didn't build the ship. He just modified it. If it is normal for a more advanced ship than an X-Wing to shield their engines, then yes; but if not, then no.
I'm a little hazy on the ability of your HE and HESH rounds.. Have you sunk my battleship? lol ..or is there a chance of repelling the rounds via ship shields? I have no means of gauging.. Know what I mean?