Is there any advantage to the Killer B, as opposed to the Super B, or Super B Special? Just trying to weigh my options here. Also, Would any of the three of those be okay to run as a High Pressure if compounds were in the future?

The super is a 60/65 I believe, the killer is a 61.5/65 or 68 can't remember, and a special is a 64/71. My buddy has a special, loves it for power but you will need bigger injectors and forsure proper pattern and pop pressure to run it efficiently and would still spool kinda slow. Perfect with a cam and can't tow very well without one. The super is the best of the three for fast spooling twins. And the killer is good aswell for a little slower spooling setup. Hopefully that helps.

62/65/14 ... Great Turbo and easyily able to hande Compunding dutys .. can support about 450-500HP single ..
You wont be happy with either turbo you have picked, it will be sluggish off the line, smokey and until you get it to spool .. no fun :ouch:.. spent a few extra bucks .. :c:

The killer is a 61.5/64 and would be fine for towing. And the special is to big for towing I think but not sluggish or that smokey at all. My buddies with a 64/71, htt manifold, 50 sticks, 180 pump with a custom 100 plate, afc mods, and my tuning and really clean and only a bit slower then my he351. That's only with 5x11 injectors.