Pulling the front valence yields little benefit, as there no drain plug anyhow....
Most folks add a "Prestone or equiv" 16mm 5/8"heater hose drain kit under the steering rack access panel.
Sometime you can get lucky and get the block drain petcock to move. Presuming it does, there will be coolant just about everywhere due to its placement. If originality is not a concern, the are companies that make better spigot with provisions for an actual outlet hose to make block draining a bit cleaner.
I find that raising the front helps to get more coolant out.