*12vdc
Ano thickness ng spacer mo? Eto yung nakuha kong measurements from PRG. Para sa US Frontier nga lang. Should provide a rough guide anyway.
Lift Spacer thickness
1/2" 0.25"
1" 0.5"
1.3" 0.85"
1.5" 1"
2" 1.25"
2.5" 1.5"
If going with AAL sa rear better sya with longer shocks para di nagtotop out at full droop. Kung aggressive sa bumps maybe install taller bumpstops para di mag bottom out. Yung Bilstein 5125's the best for the price para sa rear, mura if sourced from 'mericuh. The AAL/Bilstein 5125 combo works. Much nicer ride quality laden or not. Di na kelangan ng airbags, pangako yan.

Yung akin standard length Bilstein HDs pero maganda na rin, IMO no need to replace with 5125s.
Yung front naman the thicker the spacer the greater the preload on the coils kaya mas matigas both compression and rebound the taller you go. Personally yung >1" spacer matigas na masyado. Pag taller than 1" spacer kelangan pa ng longer shocks and UCA bump stops..