extender

I just bought a new Mazda 3 and am wondering if there's a way to make my front license plate stick out a little farther, maybe by about 3 inches, give or take. I live in the SF Bay Area, so lots of parallel parking, and it's somewhat common for cars to bump each other while squeezing into tight...

I could not find any info in the forum regarding replacing the sun visor on the Mazda 3 with a visor that has an extender to block out the sun coming through the gap between the B pillar and the limit of visor. Any suggestions? I am making do with a simple cardboard cutout and hair rubber band.

I'm thinking of installing a Fumoto quick drain oil plug in my new 2012 Mazda3. Is the extender needed on these cars or is their sufficient clearance that I will only need the valve? Is there room for it at all? TIA for any advice.