Presently building my 427 alum block. Prices you mentioned seem
to be close to what I'm paying. I'm getting some parts through
mail order discounters, and some through local speed shops. ( I do this when I need their expert advice, and I feel its only fair to
pay a little more and buy from them.)
BTW I also was considering a roller cam, but EVERY engine builder
I talked to advised against it, due to the extreme valve spring
pressure required and the attendant wear and maintenance.
Best of Luck.
