I called Dan to order PI cams this afternoon. He said there are two types of PI cams -- Romeo and Windsor. Most guys are using the Windsor cams. Dan checked on the computer and my '97 Thunderbird has a Romeo engine. Would using Windsor cams be a problem or should I go with the Romeos? The Windsors are each about $15 less than the Romeos, so if I could save a couple of bucks that would be great.