I have what seems to be the common problem of the resistor pack going on the heater, the fan is only operating at numbers 2 and 3. I did some reading an it seems straight forward, buy a new resistor pack or the new "upgraded" one. Access it via the passenger service panel or clam off and job done. I have a 2002 Elise and it doesn't seem to be that straight forward. My heater blower is not located below the passenger service panel its central to the car. It would also seem that the blower, matrix, and resistor block are one unit.
The heater fan has also been getting a bit noisy so I had figured I would just replace the fan and the resistor unit, it seems this will not be the case. I'm hoping that someone can give me some super advice that means I'm not going to have to replace the whole shooting match

Does anyone have any experience with these units and any money saving advice? (someones going to say just leave it broken

Thanks,
Graeme
edit: I have some blurry photos if it helps