ok...first off...it is the new 5.0 mag. second..it was 599.29 rwhp after .020 bore, 8.5:1 cr, forged internals, fr500 heads (stock valve size), stock mach cams, ported intake and D-1SC intercooled pushing 22psi thru an AODE (2800 stall) W/O the nitrous turned on and ran 10.84 at 132 w/315 DR...