FIR on CYCLONE I

Hi,

for an old project (Quartus 8.0 SP1) on a CYCLONE I device we now need to implement a FIR.

Which IP should we purchase: FIR I or FIR II, and is FIR I still available for purchase?

Which Quartus version is today recommended for Cyclone I projects with FIR?

Any help is appreciated, thanks.