So here it goes...
I have a 67 chevelle that currently has a 2 bolt 454 +.30, scat cast 10:1 rotating assembly with some Dart Iron Eagle 308's, the tranny is an M21 out of a 67 vette and has a Spooled rear- end with 4.88's. I put most of it together on a budget while going through college. it has been sitting for about 5 years now - there's a little back history...

Now I'm going to be pulling the car out of storage in a year or so and was thinking about putting together a 525/ 540 short block possibly aluminum -thoughts?

But I happened upon the Arias BBC HEMI heads and was very intrigued. I was wondering if anyone had run these before, and wanted their input, also what kind of comp. ratio id need to be looking at to support the possibility of a blower? The car will be a street/strip car, Thanks for any input!

So in short:
-thoughts on aluminum blocks?
-thoughts on C.I.D. to Heads pairing?
-thoughts on Cam and compression ratio with a possibility of adding a blower