6870 waterblocks

[FatFishMonster]

just been looking around and i understand there is a major shortage of 6870 full cover blocks!

anybody know if any other blocks will work? such as the 7870 or the 7850 blocks?

 

[Martini1991]

They're a specific type of block, I had 2 when I ran a 6870 Crossfire.
I'd honestly just get some block only ones.