So I have a 2018 SLR SE. couple weeks ago I did a cat delete which produces a lot more heat . ( I thought it would be better for heat) now like everyone else the inside gets very warm. All the reading besides hood vents etc seems to be change the muffler. But I don’t want a rear exit exhaust. If I get just a different muffler will that help with HEAT AND PERFORMANCE? Any idea on a muffler?