I would avoid doing that, use the HOT-ROX while dieting or cutting.
You could try Spike, I haven't used it personally yet so I can't say either way whether it works for me. I will try some in the future.
That being said, what you COULD take pre-workout either by themselves or stacked is the following:
Ephedra or Ephedrine (IF you aren't too sensitive to stimulants)
Again, I would ONLY use these on a bulk IF it's ONLY used as a pre-workout boost.