I can only contribute $20, I don't think that will help out much.
Got my rental, a 2011 Mazda 3i with just under 15k. I can barely hear it start. First drive impressions of it are good. Has the 5 speed auto-stick and has some pep to it. I could see it as a dd but not anything to mod except for lowering it to get rid of the 4" gap and maybe a little louder exhaust to know it's running.
until you put that exhaust on and gain a legit 8-10whp... hell the header gained a legit 16whp
great dd, bolts ons an even better dd with even better mileage
ive gained 27whp with the boltons i have (dyno proven from stock dyno pull compared to last spring, and both were on the exact same dyno)