TR5 is usually only fitted if you are installing the Pinto engine, most other engine installs means that TR5 will get in the way.
So, what most folk do is not install it but to put some corner braces into the engine bay ,
Andy......use the length of TR5 & cut it into approx 8 inch lengths & weld them into the corners where TR1 & TR2 meet TR8
cheers
andy