yes there are available, sa shocks naka kabit na kami ng bilstein sa F-150. and im sure may available din na bilstein para sa silverado. Rancho has shocks also for both, as well as trailmaster. these are the shocks that i know are available locally. pero if you order sa labas marami pa avail.

sa lift kit there are lots of them, but i dont know if somebody sells locally. but we ordered one time a lift kit na Rancho for the silverado mga 4" or 3" suspension lift yata i forgot na it was almost 2 years na, and the silverado looked great. it had 16x 10 rims with dunlop mudtires. total cost was in the area of 100k plus install.