I vote 4-2-1 w/no turbo flange. I would pay like 5-600 for something good
I vote 4-2-1 w/no turbo flange. I would pay like 5-600 for something good
you could get a welder/fabricator build one in a jig for about $400.
You could get a flange cut and make one out of a b16? honda header for about $150..
I understand how off the shelf is "important" if you want that, but a $150 "home made header" would allow for more mods, and dyno time... although there are headers available for vauxhalls in europe off ebay that would still come in under $600..