Gecko,
Think how much more it will cost to do it again, and again. If you use the rattle can, you will need to repeat, as it will not hold up as well.
Bite the bullet and do it right. Nobody says "I wish I had done the elcheapo job..." when it looks good and lasts a long time. The other is certain to have regrets.
Make a good looking truck into a great looking truck and you won't regret it.
