Hi Ned,
I have made up a piece of wood to do the job (See Pic) its 3 X pieces of 4" X 2" nailed together, nail one on top of the second then nail the third piece to the other two, That way 4" nails will do it.
I then cut two other bit of 4" X 2" and nailed them across the bottom at 90 Degrees to the others to act as braces to stop it tipping over, I then nailed a piece of 4" X 1" to the top of the structure to give me 1 inch clearance under the front wheel. Most building sites would have theses bit of odd/scrap timber lying about that they would most likely be happy to give you.
All bits of timber need to be about 16 to 18 inches long.
The exhaust down pipes will take the weight of the bike no trouble at all, I have even sat on my bike with it up on the timber stand.
The pic of the bike is my old girl, but she has had a lot of work done the the suspension since these pics were taken.
Good luck and welcome the the madhouse oops! forum