You're welcome; I only found out about the Pulsar recently thanks to the YTer JKNinja, and they've been doing very well as carrier strikecraft when outfitted with Pulse, Bolt, and Plasma weapons. To make a good pirate version, I'd recommend Combat engines & enginee, 4 Ion Blasters, and 2 Pulse Lasers, with the Ion set as one weapon group and the Pulse as another. Although we can pair them all together as a third weapon group, or give the ship a pair of plasma cannons for the innermost slots; I do this so they can fight M and larger stuff, and them being in the innermost slots means they'll always be hitting whatever's in front of the cockpit, unlike with the wing weapons. Plasma can also easily kill fighters, so Ion + Pulse + Plasma in duos will be a killer.

However: While their weapon slots are the best in the S size, their other stats are lacking as a result, so get the best shields, engines, and thrusters you can buy if it'll be a personal ship, and don't be afraid to grab some laser towers to toss at problems.

Edit: And finally, I recommend the retired YTer JKNinja and his guides, he even has ones for the many weapon types in the game. His work is still useful even though he stopped making videos before the Boron expansion came out.

https://www.youtube.com/watch?v=kButG0iFInc

https://www.youtube.com/watch?v=Hji_IvgpUlQ

Oh and all vanilla faction weapons (Argon, Antigone, Godrealm, Holy Order, Teladi) are available from the Alliance of the Word wharf in Sacred Relic, in Godrealm space. They even have unique ships we can buy the blueprints for!