Hey guys I am trying to attach my rotisserie to the back end of a 71 Duster and the only good spot I see to hook it up is on the bumper support valance.That doesnt seem too strong to me but is there a better option?
The rear trunk area bumper holes are plenty strong enough for mounting the rotisserie to the car.
http://www.mts.net/~hpokrant/Restoration_Tips/1-Rotisserie/Rotisserie.htm
Mostly depends on how stripped down the car is. If you've removed the engine, trans, rear end, and seats the rear bumper attachments are fine. I've got mine attached this way and no problems so far.