A few ideas;
It would be nice to support them through a registered non profit here in the USA, any donations would be tax deductible.
We could contact them and see if they have worked with any organization like this in the USA before and use them as a method of sending funds. (I'll e mail them)
We could see if our "own" ACF could send them the money on our behalf.
Talk to Desert Lion Project and see what their vehicle needs are, and if they have any type of budget in mind.
Ask Spike to look for a suitable vehicle.
I'd suggest a mixture of straight donations, blind auction, donated services and goods to raise the funds.