A500 GVP Series II HD8+ questions

[Oldsmobile_Mike]

Just won one of these off ebay, am super-excited because I've wanted one for, quite literally, 20 years, now just need to wait for it to arrive from the UK.  A few questions before it arrives:

(1) - I'll need a North American power supply.  Does anyone have one for sale?

(2) - Alternatively, is there a hack that can be done to this unit to allow it to pull power off the A500 bus?  (I'm aware that I'd have to run at most a CF or SSD this way, don't want to strain my bus too much)

(3) - Is there a good SCSI->CF adapter anyone could recommend?  I see mention of a few online, but they seem pretty rare.  Is the Mechware one the best option?  I'd rather avoid the nasty daisy-chain mess of SCSI->IDE->CF adapters.  :p  Alternatively I may just go SCSI->SATA, and throw my spare 32GB SSD drive in there.  

(4) - I understand there is an upgraded "Guru ROM" available for these devices.  Is there any good source for them these days?

Any other tips about this device anyone would like to share?

Thanks!!!!  

[Oldsmobile_Mike]

It finally came.  Have wanted one for 20 years, so am pretty excited.    May order one of the Mechware readers to go in it, but first... I still need a power supply.  Anyone have one for sale, or know how to wire a PC PSU to this thing?  That hack that's posted above is for the A590, not the GVP.

Alternatively, what would happen if I just plugged it in and turned it on with no external PSU?  I do have the "heavy duty" A500 PSU (LOL).