well I used 1/4" all thread. This allowed me to use nuts on either side of the levers. I shaved some nuts down to 1/2 thickness so it does not look so bulky. I allowed for plenty of clearance around the exhaust and intake manifold. It is not something you would want to use on a show truck but it does seem to work good.
Thanks for the info guys and what problems to look out for...
Trey
