alot of the newer cats flow better than the old ones ever did. high flow isnt needed unless you have a decent amount of mods. these motors arent beasts in most cases.

87 4runner 33" bfg mt's no lift. dubbed the marine by my frinds. dead as of august 14 2005. 84 ex cab p/u 33"a/t, 3" suspension+3"bodylift, thorley header and 2.25xhaust, downey midrange cam+rocker set, very milled head! NO RUST!