[rwhite65]

Ok, if I read that right you said it already had a Windsor in it and that you want to keep it looking stock. Assuming that statement it correct....

I would not swap in anything. A 351w is still a 351w whether it makes 255 horsepower or 455. The question is why it only makes 255 horsepower. I would swap out the cam and heads....Paint the new heads the original color or at least port the crap outta the old ones on it. Open the exhaust up a bit, and try to swap carb leaving as much of the stock stuff "appearing" to still be hooked up. If you are worried about the ignition, a petronix kit is probably an option.

Figure out what rear end you have, and swap in some good 3.73's or so. A shift kit if the ole tranny seems up to the task....and go hunting.

If the thing has the big ole ford air breathers, you might even be able to hide a NOS cheater kit in there some where......

I got my but handed to me once by an ole cutlass, but I wasn’t smart enough then to realize I was looking at nitrous lines.
Ryan