Can You Blowtorch A Pig Skin to Make it Crispy?

I like to try this recipe here.

http://panlasangpinoy.com/2014/01/11/crispy-oven-broiled-liempo/

Liempo means Pork Belly in our country. Anyway, my oven is a simple gas oven with no broiler option. It doesn't have a heat on top or slot at the bottom. I can't make the pig skin cripy with that oven and I don't have a broiler also.

Is it possible to use a blowtorch to make the crispy skin? Any alternatives?