408 would cost more then this entire turbo build. without suspension truck wouldnt go no where near those times not mention truck wont be legal past 11.49 cause no cage is going in it. cutting into a shell i bought doesnt bother me, cutting into my truck it would bother me to much. If i would go that route and quest 9s in truck ill start with another roller of a RCSB.
the silverado will end up being a fun hauler