This took a bit of trial and error. The issue is that where the throttle cable mounts to the oil sump, is only about 3/4" above an exhaust cross tube. I'm concerned about what the heat might do the guts of that cable over time. With that in mind, I split a piece of fire sleeve longways, sealed the raw edges and ends with RTV and then wrapped it over the throttle cable. I affixed it with several pieces of safety wire then sealed it up with a bead of RTV down the split and a dab on the end where oil might spill on it during a filter change. I couldn't really seal up the front end because it's butted up against the mounting bracket under the oil sump. I'm not concerned by this because I'm not shooting for fireproof here, just heat resistant. I then fabricated a heat shield from aluminum scrap to go under it on the pipe itself. If you look at the pix below, The angled plate of the shield is .020 2024-t3 scrap and the strap that's riveted to it with the band clamp under it is .032. The strap is offset because when installed, the shield spans an expansion join in the exhaust. I goofed and made the first one too small, so I made a second longer one. The dimensions that worked ended up being 3" by 3.75". There isn't much room under there and I reasoned that it was probably better to have the shield relatively close to the pipe and a bigger air gap above it than the other way around, so the angles in the attach strap are such that the shield is about 3/16" above the surface of the pipe as installed. Since I had the shorter one already made I put it on the exhaust pipe in front o the heater scat in the engine data plate area. That scat is already secured about 1" inboard of the exhaust so I don't think it's necessary to have it there, but I already had it, so I put it on. That exhaust obviously gets really hot, but I think aluminum will hold up okay in the lower location because it's further downstream of the engine. The upper one is pretty close to the exhaust valve where the flow is the hottest so I'm not so sure about it. I threw it out there on VAF for opinions and in any case will definitely keep an eye on it, but I may just get rid of that one entirely or make a new one for that location out of stainless steel if I can scrounge some up in an appropriate thickness. Both of these are secured via stainless steel mil-spec band clamps. I would consider using hardware store band clamps for cabin ducts or something trivial like that, but in this environment, I'm going mil-spec. Turned out nice.