Length of 7mgte Block and Head?

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SupraNoob
Oct 13, 2013
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New Jersey
Hey guys!

So I started taking apart my Supra yesterday and realized I do not have a straight edge to check the flatness of the block and head. So my question is, does anyone know how long the block and head are? Would a 24in be okay for the job or should I get something a bit bigger?

Thanks!