u could fix the surrounds on the stock minimus77 (well yours are optimus pro 77's but they are the same thing) woofers with a $5~ kit
I bought a pair of these at local thrift $10 then figured out the surrounds were shot...
and just cleaned off the old surrounds and glued these on.. good to go..
I guess sort of moot now that you've stuck the polk tweeters and woofers in...
I gave the minimus 77's i fixed to my wife to use with the Pioneer SX-450 I gave have... sounds pretty good .. my wife likes the SX-450 and the 77s