Is 130 db loud?
Well it truly depends on frequency and distance where you are measuring from.
If you look in the DIY Speakers and subs thread on this forum, there are guys who are hitting 130 DB at their listening position. In there home.At 20 hertz and below.
This takes gobs of woofer area, woofer displacement, power and enclosure. or rather a combination of them.
Now in a vehicle with the cabin gain available that way trumps room gain, you get a lot of bass with much less requirements
105db at midrange frequencies as well as high, are screaming. Going even louder get painful real quick.
now bass frequencies where we are not as susceptible to, is a different story. Not to say 140's and up it starts getting uncomfortable quick as well. 150's and wow,160's and Holy Crap!
your SPL vehicles are usually tuned what is considered high 45-60 hertz to couple with the natural resonant frequency of the vehicle. This ends up sounding like a fart. A very loud fart but cruddy just the same. Tuning lower gets you the audible loudness feature. Sure a 150 db's at 55 hertz is loud but a solid 135 db of 35 hertz outside the car sounds louder.
Ever go to a sound off comp and hear a car playing that just drew a crowd because of the shear output of lows. And watch that car score lower over all than cars that didn't sound "out side the vehicle" as loud? Well that is frequency related SPL.
I took my car when I got it done 3 years ago to a local show. There was a guy there that was running 2 15's and a kilowatt amp. He had a huge crowd around and his system was pounding out some serious bass. He was proclaiming himself the winner and that they should just give him the trophy/prize etc. It was actually really impressive. Especially considering the output from the brands of woofer ( a lower end speaker) and just a 1000 watts. Vehicle was a Ford Explorer. There was a guy who was running a single 12 (Type R) and an Alpine kilowatt amp. same type of vehicle.
End result of first pass ws the guy with the 2 15's hitting 135 and the guy with the single 12 hitting a 145.
The guy with the single 12 took top honors in his class. Got the trophy. The other guy drove off after the first pass.
Why I told that story is because it's to common that something like this happens. The guy who won was running a ~50 hertz tune. His material was set up to play a 45- 65 hertz tone that complimented his vehicles resonant frequency. It sounded bad but in his truck it got SPL related Loud.
Is 130 DB loud? At 35 hertz and up, yes. For your budget? Yes.
Wil you be able to do better? Absolutely. But like everything especially hobby related, it just takes more money.