I noticed you went with 600Hz bass blockers. Would the 300Hz or even the 150Hz be fine? Afterall, you are replacing just a tweeter in the dash with a 3.5" cone + tweeter 2-way that can play down to 80Hz...

to the OP, what made you go with 600HZ vs the other values?

I'll find out soon what the capacitor is on the tweeter. It is also no wonder why Crutchfield says a 3.5" speaker doesn't fit in the dash; it is because there is only a tweeter in the 6-speaker, non-bose setup (like I have in my '16 Touring).