This is what they look like. Notice how the exhaust is very long. And they use their own aluminum stands.

Bear in mind that D-5's also take a different block (the pushrods come in a little different) as well as different pistons (because of the shallow chamber), pushrods (longer), plug tubes (longer), intake manifold (round ports), headers (round ports as well as a different pattern), valve covers and intake/exhaust/head gaskets. And it may not fit in your car because it's wider. I love them but if you are wanting to get one of those running you are a better man than me.