As long as your car sits at the stock ride height in the front with at least stock height front tires, you won't have a problem. The cheaper headers work fine.
not true. they wll get smashed at stock height. especially with stockish torsion bars. may smash less with something like a 1.08 bar but i'd bet they would still hit. every small block car back in the day with headers that i can remember had smashed headers ... what we all did before dougs and tti? we ran around cringing at every dip in the road..lol it sucked.