If you can do better, then give him some commentary that is contructive, or go do better in competition. He could use the help if you have the knowledge.
By the looks of the headers so far they're above average, will be tested in multiple iterations and an evolution in design and construction from one to the next, and thats more than you can ask from most people flogging cheap extractors across the net. Look at the shit Americans are forced to swallow as 'kits', its complete shit. Here you have a local, with local support, who is spending the cash to get the product right and you look at some but welded thin wall stainless shit made from 4 steel donuts and an ebay tig that would crack apart and are completely unsuitable as extractors except to look good in photos and people fall head over tit for them from pretty welds and shiney shit?
Give me chunks of mig wire hanging out, maybe a little blood stain, a few hammer dents and jaw marks from a vice, thick walled mild steel and a tapered collector any day of the week over that shit thats supposedly crackforce.
The best thing is he'll make em better and better, and they'll be the best EZ30 extractors available for 1/3rd the price of something custom thats hit and miss, and he'll have 200 orders within 6 months at $800 a set. Go for it so you can stop flogging off shitty superchargers
