Heat Wrap, good or bad?

[Thad]

i've been recently posting about some noise coming from my tirck-flos. Either it's a small header leak or lifters. Since i can't really tell which it is i've decided to go with header leak since it's cheaper to fix.
I also thought since i've got the headers diconnected i should wrap them with the heat wrap. Is the wrap an advantage or disadvantage? I have long tube headers and they get scorching under the floor board. That's one of the reasons i thought i'd do this. Any way! To wrap or not to wrap, That is the questions?

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90 LX 5.0 ,bored 302, MSD 6AL, Twisted Wedge TrickFlo HDs, World class T5, BBK fender cold air induct., 70mm TB,Edelbrock performer Intake, aluminum Drve shaft, 3.55 Gears, Long Tube Headers to Flowmasters.