Something else to note.
SOME, again SOME FEs with the 428 mark with 405 bore had the very thick walled sleeves. These (provided corrosion hasn't killed them) can usually be bored to stock for a fresh 428 build. Some say this is true, some say it isn't. I say my own (and a couple built for others) engines over the years say it is true, just not very common.
I have 2 428s and have had many more. Only one came as a 428 from the factory. I used to pop a freeze plug and measure between the sleeves back in the day and if it was the thick sleeves, I'd bore away. Thing is, these days many, many are corroded, so if it you find one that does have the thick sleeves, you need to pay to have it checked and only bore if it checks good (to full stock that is).
This make sense I hope?
it's easier to show than tell.
Darlin 69 Ranger 390 4v, PS, DS II, disc front, 3G alternator, 67 mirror.