Heat wraping exhaust manifold (will it crack?)

[nrcooled]

I am having overheating issues since I put my FMIC on my s13. I have orded another fan to run a dual setup and contemplating getting a 2 core radiator. But for now I want to try inexpensive fixes (i.e. 2 fans and heat wrap)
I know the benefit of heat wraping the exhaust manifold of a SR but I am worried about cracking the manifold under the heat. Will the stock manifold hold up to heat wrapping.
BTW I did a search for "heat wrap" and nothiing came up so I assume it's a non-factor. But any and all input would be greatly apreciated and any advice on reducing heat in my engine bay.