Stereo & Electronics - What should I do with this amp?

I have an old school ('92-'93) RF Punch 45 laying around the house. What would be a good sub to pair up with it?

If i remember correctly, it was 45W @ 4 ohms RMS per channel ( 2 channel). I think it may be 90-100W RMS @ 4 ohms bridged. It's 2-ohm stable, I believe.

Thanks,

jl w0 in a stealth box