That was in the game way back when. Back before you could properly fire at what is now long range missile range. I hear it's AI was not updated to compensate so if you have some way to hit it from that range you may be good.
Failing that max tech levels weren't as high then either, if you have any teir 6 or better armor plates in cargo and you have the ability to do a mid flight armor replacement that might buy you a bit of time, but I can't guarantee how much. I think teir 4 was the best you could get back then, and it tore through that pretty fast, so even with modern armor I would avoid getting hit when possible. If you have shield generators keep them down and redirect power elsewhere, completely ignores shields not tuned in a particular way, and nobody really stocks the ones with the capability anymore. Also if you have one, set your CIWS system to offensive. Hardwire it if you have to, the loot will make up for buying a replacement. It shoots no missiles, and even remotely modern CIWS systems have the DPS to overcome it's armor rating long as you can keep alive long enough to whittle it down..
Thats all the advice I have though I'm afraid, I'm nowhere near there or I would swing by to help out. If you have none of that, yer probably SOL. It's an old boss, but still a boss.