It really doesn't matter. We can all sit here and over think every measurable aspect of both blocks, but I'd make my decision solely based upon the condition of the block, and since you already have a good block, I'd just use that.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction"
1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
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