Realisticaly they are almost the same in a way. Supersprint replica headers are identical in design but dont carry the Supersprint name. Look for those. I would avoid the cheap no name ones where you dont know where they came from. Your exhaust headers are subject to extremley high temperatures. You need to make sure their well made.
I've heard some pretty good things about rangeland from my buddies running their suspension systems. They claim that there not bad for street performance but not the best for track use. Raceland has decent feedback from customers so sure why not In my opinion .
Raceland coilovers are a decent low cost coilover. Their products are no where near top of the line, but they work for people on a budget. If you buy them knowing this your going to have a better experience. Some reviews where people say they were crap or garbage were expecting an FK Coilover for a Racelands price and that's not happening. I didn't even know they made headers lol. They do however look decent. Those would be better then the eBay ones because at least if something went wrong you would have a easier way of getting the issue solved.
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