3.31 to 3.73 worth it?

Thanks Fishy. My Duster was a slant 6 car when I bought it and it's also my first project car ever. I got a really good deal on the 273 and 727 that came out of a friends Dart. I never knew or considered that 727 being a power soak behind the little 273. I was happy getting a good working 727 for a bargain, and when budget alows I could put a bigger engine in the Duster. The thing is, in Sweden where I live, it's hard to find parts and they are 3 times more expensive then in America. That being said I will now keep an eye on the ads for a 904.