Can I swap hds from older series 2 to new series 2 dual tuner?

[n21jc]

I have a series 2 Tivo with an upgraded 250G hard drive (instacaked). I'm buying a series 2 dual tuner 80G Tivo today, and would like to swap the hard drives so that the dual tuner model has the larger hard drive. Is that do-able? I'm not sure how the dual tuner feature affects this. What all is involved in doing this? I can't find the specific info on the weaknees or 9tht websites.

[supasta]

Not without putting a fresh image on the drives after wiping them clean first.

No, you cannot just simply swap the drives, plug them in, and boot your TiVos.