That depends…
Do you want it now, or willing to take some time to piece it together?
I went the second route, only because I am living on a fixed (racing) income.
You can find used/;ow mile shocks for cheap on many different places (Craigslist, R3vlimited…etc.)
Same with the springs, though I bought my new from my sponsor.
The sways can be found used, and they aren’t really a high wear items (except the mount bushings, which are cheap and easy to replace…) I got mine from another PRO3 racer on trade for a larger set I had.
The rear upper shock re-enforcement I have not gotten yet, but for SE30 it’s not a dire need at first. Heck, I ran PRO3 for two seasons without one, and that series is open shocks/springs. Never had an issue with punch though… Eventually I will get them, but there is tons of options, or make your own re-enforcements plates from some scrap steel.
$1300 is a lot of money what the Spec Suspension is, but unless you want to piece it together, it’s an option.
I still don’t have Camber plates upfront, but eventually… You are probably not going to lose a race because you don’t have camber plates…