I bought 2 long leg couplers off ebay awhile back for a decent price, and they've lasted without any issue at 35psi.
I still have one, but the legs are slightly cut down. It's black. If you're interested I could maybe sell you the 1 I still have if you wanted.
I'll try to find where I bought them on ebay though and let you know if i find them.
BTW mine is 2.5", what size do you need?
Edit:
Pretty sure these are the ones I bought. Black 90deg with long leg lengths:
2.5"
http://cgi.ebay.com/ebaymotors/2-5-I...item3efecb204d
or if you needed 2.25"
http://cgi.ebay.com/ebaymotors/2-25-...item3efecb2023
And these are also reasonably priced:
http://cgi.ebay.com/ebaymotors/2-5-S...item51947b49b1