what 94 corvette mods should i use?

[vettehunter]

gettin a stock corvette and want to make it as fast as possable without switching the original engine. so what kind of headers and exhaust and stuff should i do to it first? im gonna have this car as long as possable and i will be driving it about 4 days out the week. so where should i start and describe what type of the part you said. dont have a budget, so spill what you think! i like these headers, which one do you like?
http://www.summitracing.com/compare.aspx