The two heater hoses that come out of the passenger firewall and connect to the waterpump and intake fitting, is it ok to lay them on top of the engine or should I try to attach them to the shock tower or something...

 

I personally would try to route them away from the engine. I would think if they lay on engine it may cause them dry up and crack faster. You may even be able to make a bracket and suspend them off the export brace.

 

IMHO, you can run them either way. Just need to make sure they aren't rubbing on anything or getting too close to the exhaust.

 

I ran mine along the top of the engine..also wrapped them with Steel braiding. So far so good.