Is there any sealent needed for the coolant lines that run across the back of the heads and up to the front of the motor? Ya know, where the lines meet the heads, i think its called the banjo bolts or something. I'm on my third engine and I'm not gonna mess this one up (hopefully)

 

Do you have the seals for them? You need 4 washer/seal things. They are sortof a steel washer coated with rubber on either side, like a grain bin washer but bigger, and rubber on both sides. Maybe I'm the only farm boy here who knows what a bin washer looks like? Anyway, if you have those maybe put a thin layer of silicone on them, just to lube them so they don't tear or smear when you tighten them up.