i have used nova cores and cavalier cores
both went in the front of a dragon bx full tower
first the un modded cav core
then verson 1 nova core before i changed the barb placement to right angles
the nova cost me a £10 and the cav £25
I have them both to spare as i replaced them with a thermochll 120.2
this is an old picture with the nova core in place
(EDIT) sorry but the pictures are held on an old account and i am still trying to fnd my backup