TTI headers which ones to use?

Ok guys I'm getting ready to pull the trigger on ordering tti headers. I'm tired of low hanging crappy headers the hedmen ones I have are toast and I'm not going down that road again. The car is 71 dart with a 360 j-heads that have been max hogged out and 2.02 intake valves in them. Power steering, manual brakes 904 with a floor shifter. I plan on building a radical 408 for the future so ordering these headers I don't want to have to change later. Should I go with the step headers or go with the 1 7/8" race headers? And how does the finish of the nickle chrome plated ones hold up? I want shiny headers :)
thanks