The same tubing, right and left hand taps, jam nuts, etc. are available on Ebay, without the outrageous markup Speedway adds. Another source with reasonable prices for specialty machining bits and pieces like left hand taps is Victor Machinery Co. (www.victornet.com).
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!