Has any iMac user tried the Pyro firewire drive kit by ADS?

I've seen posts that claim current firewire drives are IDE inside with firewire interface, so I'm thinking of buying a firewire drive kit and an 40g EIDE hd to make an external HD for my imac dv.

My purpose is eventually to have more space. I know that I can swap my internal HD with a bigger one, but someone told me that I might be unable to start up with the system cd if accidents happen. Can someone tell me their experience of changing the HD and any problems came with the change?
Thanks in advance.

[wlonh]

the link in the above post was not formatted correctly so it does not work...

try this instead: www.adstech.com

I just got a Macally/Mace drive kit (identical to Clubmac's) and a maxtor 20gig 7200rpm drive from buy.com. Everything was hooked up in 30 min and runs fine on my 7500 with a firewire card.