I already did they are in my buid thread here, called 88 buildup on a tight budget or just go search ebay for the ones I had from tuning pros or 88 chevy truck headers, it aint hard.
I did it anyways took less then a minute...
http://shop.ebay.com/i.html?_trkparm...&_sop=15&_sc=1
tons there...
http://cgi.ebay.com/ebaymotors/CHEVY...Q5fAccessories
an auction for some just like mines..
http://cgi.ebay.com/ebaymotors/Chevy...Q5fAccessories
That's the ones I bought and are now cheaper of course lol.
my thread about halfway down this page is the headers and pics of them installed and such..
http://67-72chevytrucks.com/vboard/s...=376083&page=2
here's the other thread of mine with more pics including how thick they flange is and the ball end and how they discolored.
http://67-72chevytrucks.com/vboard/s...=395994&page=2