I too own a 78 440 Warlock with the all important D as the 5th character in the vin. Now let me start by saying that yes I agree these trucks are rare, but, a total of 73 440 d150's built in 78. I don't want to upset anybody, heck I've got one myself, but I've run into other 78 440 trucks in my travels around the surrounding states and in western Canada. For that matter I've heard from separate sources years ago that 5 78 LRE's with 440's were built and sold in Canada. I've never seen one but have talked to a gentleman in Saskathchewan who did. Anyway I agree they are rare, I just think there are more out there that slipped out with 440's. This is my humble opinion and please don't think that I mean any harm. I don't! Give me a couple of months and I'll have some pic's on here of my Warlock with it's fresh cosmetic resto.