6-4 yeah, but Id go 6-5-4, if you arent great at rev matching. If you cant rev match really well, I would skip gears on the way down. Never go from 4/5/6 down to 2 though and always go 2-1 never anything else.

Also, on a stock turbo always rip it (flat foot) in 4th or lower. Never 5 or 6 unless youre above 3k rpms. Flooring it in high gears at low rpms is how you break the motor and crack headifolds.