Thoughts about the body kit. — Toyota Corolla Levin, 1.6 liter, 1993

An exclusive body kit for the Levin ae101 is not easy to get or not cheap. And I want an exclusive. Plus the roads leave much to be desired. There are several thoughts on this.
Zababahat a diffuser on the standard rear bumper, the front one is also stock + lip + diffuser. Well, thresholds of course.
Everything except the thresholds I think to sculpt.
Photos are attached.
Comment, share tips and experiences.