Try here for your coilovers
http://www.cdfracing.co.uk/product_info.ph...7c1a47423df043a
As for leaving the car idle for a few months, start her up and leave her running up to temperature once a week or every couple of weeks.
Leave the handbrake off if its safe to do so, to stop the rear pads seizing to the discs.
Give her a good polish and wax to keep the paintwork in good order