Options and upgrades are listed below:

20'-21' Granite can have 72" or 78" ~ 22'-23' Granite can have 78" or 84" ~ 24' Granite normally has 84"
LSX, LSA, LT4, and Raptor 575 engines normally require a Hamilton 241 or Scott 912
A: (4) 8" Mids (1) 4 Ch Amp ~ B: (4) 8" Mids (2) 6.5" Mids (1) 10" Sub (1) 5 Ch Amp ~ C: (4) 8" Mids (4) 6.5" Mids (2) 10" Subs (1) 8 Ch Amp (1) 1200w Mono Amp