The lower Mishimoto hose (also for a GTO) needed a bit of splicing and a plastic adapter so to position it the right way. Nevertheless, this hose has been leak free so I don’t see any downside to hacking it up to work with your application.
LS engines have these so called steam ports (look two photos up and you’ll see a metal pipe capped off with a red nipple) and what they do is bleed off trapped hot air in the cooling cavities of the cylinder heads. However, the port needs to be plumbed into the cooling system and that means a bit custom fabrication work on the radiator. I bought an aluminum bung and drilled a hole into the topside of the Mishimoto radiator.
I’ll end this post off with the charcoal canister placement. Most of you wont care about this but if for some reason you’re looking to run an emissions legal setup like I am then you’ll either need to use the GM one or I simply stayed with the OE Nissan unit and tucked it into the wheel well and ran the vacuum lines to their appropriate connections.