While looking for Carpet kits at the vendors websites I notice that several offer the deadner kits for about $55. They also offer the heat shield type of kits for $175. Is thier that significant of a difference to justify the extra $125 bucks? I don't recall the floor on my FB being that hot that it is of a concern for me, I could understand it maybe for the FE guys but a stock car? What have you guys experienced?