Its also a 6.2 L, it started off stock with good power, back in the day when I ran a 13.7 I had spent 300$ on a cam kit, 450 on nelson tune, 650 on a yank, 400 on longtubes and 400 on true track so 2200$ netted 341rwhp 323tq and a 13.7. Its not always how much money you spend if you buy the right stuff, gained 82 rwhp over stock.