Everyone seems satisfied with TSP Headers so we can't knock them. I'm pretty sure they only come in 1 3/4" which would be a turn off for some. Companies like ARH and SW have 1 7/8" primaries and 2" primaries. 2" is pretty extreme but the 1 7/8" make ton of sense for these cars if you plan on modding any further. Caverman is absolutely right about MAP pricing. Some certain brands won't let dealers like me advertise to low but thats why we have a Camaro5 discount for you.
But if you plan on doing some light mods then TSP 1 3/4" headers are more then enough and will make great power at a good price.