Just ask if you need more info, just bear in mind though the minimum you will have to do is:
Swap the dash loom, swap the loom in the scuttle panel, swap the fan housing and replacing the fan with a climate control spec one (which necessitates degassing the aircon and regassing it again), swap the air distribution box (which means draining the coolant to remove the heater matrix) and fitting the interior light panel with the sensor for the climate control.
It is alot of work but if you can get the parts cheaply enough, it's worth it imo. I had already done so much work to my girlfriends 182 cup that it was less work for me to fit all the FF extras than to remove all the tasty bits, sell up and buy a FF that was in as good condition as her car and then swap all the bits over.
I got all the bits from Budgie and SirDave on here, they break these cars quite regularly and were a great help when it came to getting hold of the bits.