But 427 is such a sexy number when it comes to V8 motors.
I read a article in a HOT ROD magazine that said Coast High Performance
makes a very good 351 based 427 Short-Block.
CHP-We Build Horsepower!
But like bbunt302 said D.S.S. makes a very good product, and I would probably buy from them, Ive just never heard anything about their 427 stroke kits, but I'm sure their very good. I went to school with a kid who bought a 331 Short-Block from D.S.S. and he said he liked it very much, and he's was running 10's in a 92 Fox Coupe with Nitrous
I believe, but I don't know what else he had done to the car, he only drove it to school once that I know of.
By the way I've never owned a Mustang with a Push Rod engine. This is just my 2 cent, and these other fellows know more about them than me.