Well how often do springs need to be changed. Obviously there are a ton of variables but i dont know
ECS Novi 1500 supercharger, tsp 2" longtubes, zl1 fuel pump, adm fpcm, id850s, aem meth kit, 305 nitto 555R. 600rwhp mustang dyno
Waiting to install- fsp cam kit, McLeod rxt.