Not a bad idea, Gary... If you use a metal plate of some sort and it gets too close to either the s/c or the headers, you're gonna get a nasty rattle.. You could always use some form of glass-wrap around part of the headers, and then some nice insulation? Not sure if this would disrupt the car or not, because then the headers are going to be sustaining more heat, sooner... This has worked well for me in the past on cat-removals on n/a motors, however the wraps would normally go into place where the cat was deleted, rather than on one or two of the header pipes.
edit: this has worked well on cat removals for me because removing the cats can lead to a loss of low-end torque (and obiously a gain in mid-range torque). So, in order to have the best of both worlds, wrapping the bypass pipe where the cat was removed will allow that section to still generate a small, helpful dosage of backpressure (initially, and obviously when the car is warmed up) that can assist you in getting off the line.
"Tawk amongst yuhselves"
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