If the Giant Big Stick is what you are building, I am assuming it is the 1.20 glow, 26-35cc gas plane. These 4-40 titanium pushrods can be used up to 150cc planes, so I think they would work on a smaller plane as the one you are building. These are better then a 6-32 threaded rod for making you own. I have used these on jets and on 170 cc Extras and Giles.

Titanium Pro-Links and Turnbuckles - Chief Aircraft Inc.