I got my ZT260 SE (#85) end of Feb 04 (lookers Stockport), I didn't appear to have a problem with the A/C heater, probably due to the weather. During the summer Though when its not been warm enough for A/C, I've had it switched off the vents leaked major ammounts of hot air both dash and footwell. Its had the new valve, no difference, had the flaps reset, no difference, infact if the A/C is off and the sunroof is on tilt it draws hot air from some where just as if the heater is on full blast. As with most of you for me its spoilling my first ever new car and a car that is otherwise fanbl**dytastic. Got the xpower exhaust on order. If any one is interested in power parts for this engine (I'm into American motors big time) check out Summit racing ( cant remember full address, will look it up and post it) if its made for a 4.6 modular motor they stock it. There are also various mags that deal specifically with the Mustang and tuning them. The mags are availiable from American Auto mags in Winsford ,Cheshire, www.americanautomags.com Graham Rennie is the guy to speak to he has plenty of mags in stock :roll: :lol: :beerchug I'll put the details up again as a new topic tomorrow so every one can see them.