his best bet is to buy a fab nine from a respectable source,i use a Tim McAmis piece.they come long and bare so you can brace and bracket as needed.i have tried others but tim's is the best quality i have found.it's not worth the time and effort to build one from scratch.but if he is willing .090-.125 c/m for the center depending on power and .187-.250 tubes.bracing can be made from .060-.090.here is a pic of one i just completed for Felix De La Eglasia's procharged outlaw 10.5 mustang coupe. http://www2.propichosting.com/Images/450007091/13.jpg