I use a plethora or products as I've accumulated so many over the years. Griots bug n smudge remover is a decent product for under bellies for an otc product.
All products used on that 458... P21s total auto wash, poorbous super slick n suds, totl clay, fk425, p21s wheel gel, megs 101 via Makita 9227c w low pro orange pads, m105, menzerna final polish via rotary and white lo pro lc pad, m205, wekstatts prime, z5 x3. final wipe down w fk425. 303 on tires, p21s carnuaba on wheels and glass.