I forgot to mention that my parts store guy (Wescan) recommended that I used something called Dum Dum to reseal my headlights. It was only $13 and it's holding up good so far even after a recent massive rainstorm.
I had to reopen up my headlights to remove some fingerprints I left on the projectors (gotta be perfect

) and the headlights came apart without too much effort or oven bake. I just heated up the new Dum Dum with a heat gun before I put the housing back together.
We'll see how good it is in the long run but thought I would mention it for anyone thinking for doing a retrofit. I was going to get the Nissan sealant but that would've cost me $36 up here in Canada.
Here's the link to the product:
http://www.proformproducts.com/en/pr...33&category=24.