The key is the engine. The huge XL lets you twist fast, and also GTFO if you need to. It also lets you run more DHS's at full 2x since they're in the engine. One odd thing is I seem to get a lot of kills with the arm lasers at extreme angles, such as over ledges and flying mechs. Died juuust after this screenie at 21%: It also works with a STD300, and FF gives you a touch more armor & ammo.
Additional heat sinks do not double when placed in the engine, unfortunately. Devastating build, however. I ran into one last night in my Wubanshee and got rolled QUICK! Took out my LPL side like butter.
This build plays right into my strengths, I've been running it for a while with slightly different flavor. SkiDog Flavor
5/5, A great combo! Very devastating in CQC, but also good Sniping Ability. Very flexible with either STD/XL Choice. Very recommended! Here is my personal MOD: