Will new flow master mufflers an new cold air intake and new elder Brock headers for my chevy montie carlo v6 3.8 liter 2004 give my 205 hp an extra 100 more horse power
That Elder Brock manifold won't work- better get the younger version, the "Teen Brock"
If your looking for some power, try a nitrous kit :)
and you need to think about forged pistons if you are going to try for 100hp of nitrous on a v6. only way for 100hp on this car is turbo or nitrous.