This is a foam FE engine block with heads. When we bought this, the heads were separate. The long block (block with heads) retails for $450
http://www.summitracing.com/parts/PYP-3035/
These are incredibly useful for building up a chassis to make sure everything fits without having to deal with a very heavy engine.
From the pictures below, you can see the block has been used and parts have been broken and re-glued over the past couple of years. The block still works fine for fitting, however.
Retail $450
$175
$125
$100
$75