Excellent replies, many thanks. The 351 was going to be a stroker, the best bit of advise there for me was the fact the Hookers probably would not work, I already had to bash them around with the 302.
Thanks again for the replies, Back to the drawing board then.
A mate of mine over here, has just imported one of the new Boss blocks very cheap with crank rods and pistons for $1700 + shipping, I expect I will end up doing the same. and ditch the 351 idea.