Just put it in your MAME rom directory and launch with mame dfkbl.
Don't try to play it through the GUI, you'll get file hash errors (obviously)
Patched version attempts to undo the changes made to the assets and graphics, but poorly.
Yes, there is an unmodified dump. No, you can't have it. (yet)
For reasonably accurate slowdown:
Expert all ships: CPU 40.0 mhz / Blitter 58%
Shot/Laser all ships: CPU 41.5 mhz / 56%
For dirty cheaters:
0C5F9B33: Invincibility Timer
0C5F9C57: Hyper Counter
0C5F9B77: Combo Gauge
0C5F9B7B: Also Combo Gauge, use toghether
0C5F9CF7: Bee Counter - Current Stage
0C5F9D23: Bee Counter - Universal
have some screenshots: GFX patched: