What crate engines is everyone using??

If this is an engine you are buying from someone else that already bought it, you are buying an unknown pile of parts. You should price the purchase accordingly and consider the cost of doing the things a builder would do such as:

Checking ALL clearances.
Balance.
Replacing inferior parts.

And adjusting the components to meet your goal. If you are contemplating buying directly from Indy then tell Josh FU for me.