Wait!
Why not put a b-body rear end complete ('68 to '70) in it like i did?
It only requires that you move the spring perches in 1'' on each side and you have the bbp standard.
You can save a lot of bucks this way, and use the extra money to buy wheels, gears, etc.
I use factory 15 by 6 1/2 wheels with 255 60 15s and they fit great.
With some more inside offset i could use 15 by 8 wheels and 275 60 15s easily.
I also have super stock springs (002 and 003) and my inner wheel lips rolled in.
Check out my build thread for more details........
I too have a '71 Demon Sizzler that i plan to get to in the next year or so as my next major project.
I say go with the dual snorkle hood, they look great with them!
Love these cars......