Sansui G-2000 current gain sub tolerance

I was replacing the outputs in a sansui G2000 with what most recommend as subs KSA1010Y and KSC2334Y. Just wanted to know how critical is current gain matching in these. I am getting gain of 220 in KSA1010Y and 100 in KSC2334Y I ordered from digikey. I ordered several of each but all are that far apart. Anyone familiar with this receiver?