nice project .you might want to consider the using an 871 or larger blower for that many cubes.as opposed to the 671 reason being this.
you will have to spin the 671 blower faster,to create to correct air volume to support that many cubic inches.putting more stress and heat into the blower, an 871 will spin slower to do the same, and will be creating less heat wear.
the rule of thumb I was told was 671 small blocks, 871 big blocks up to 500 cubes, 1071 500+ cubes I would recommend getting a hold of a BDS catalog has all the info on selecting the correct blower for the application. theres alot of things you need to know so as not to waste moola $$$ good luck
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