I have an Audiopipe AP15001D I could let go for $100 plus shipping. A little cheaper than you were thinking but still plenty of good power at 1ohm that won't kill your electrical too much.
just build a box you think might work, then test on someone's termlab to find your frequency, then proceed to build a better box.
repeat steps over and over and over and over again.
idk why everyone is always riding this guy's dick. who would honestly go through all the trouble to fake having 15 cars? you ******* need to get off the computer and get a job.