Insulating From Header Heat

Engine's a 360, in a 79 D150. Running Hooker ceramic coated long tube headers. I'm going to be running an oil cooler using an oil filter adapter plate. I've been trying to plan the best way to run the cooler lines (to avoid heat, rubbing, sharp points etc) and was wondering what the best product is to protect the lines from the header heat? Looking for suggestions on an insulation that has a reflective outer layer, if there's such a thing that will slip right over the hoses that will be even better.

There's a nice spot to be able to run the lines almost 'through' a large gap in the headers, and go straight to the fender to mount my temp sending unit. Does this seem like a bad idea?

All comments and suggestions welcome, just trying to figure it out.

I'll try and snap some pics and post them later, to show what I'm dealing with as far as space goes.

Thanks!