Why is everyone so obsessed with front skid plates anymore? I don't have the stock crossmember that protects the steering and besides the steering the only thing vulnerable is the lower radiator hose that I have zip tied to the bottom of the radiator (converted from 4 cylinder to 6 cylinder radiator which involves flopping sides...). Looks like you have some trans cooler lines which makes sense on protecting... I'm sure I'll add something on my Explorer build but there's nothing off the shelf that will work. From the looks of it I'd just go from the front of the frame rails to the sway bar brackets at about that angle (maybe a piece of angle iron between the brackets for some structure), other than for weight purposes holes shouldn't be necessary, 1/8" plate or diamond plate should be just fine.