Can you make the next ones fit a SMALLER BORE? Is that massive intake valve you are using the reason for the larger minimum bore size?

You have limited you market by not accounting for the number of 383's and 383 based strokers out there, there were only 750,000 440's made - not sure on 400's (prob some huge number, making my rant look silly), and around 3 million 383's - but your heads will only fit the 2 larger blocks, possibly a bit of an oversight?

Your product looks excellent and ticks lots of boxes, but when i have to replace my iron heads, it will have to be with someone else's product. A bit more market research next time eh?

Sorry I'm Pissed cause there's a nice new shiny toy that I cant have lol