John,
I've heard stories of guys using painted pvc for their cages and actually passing tech (not SCTA, just their local drag strip).
Neil,
We are working on the car at my friend's house so I'll have to see if he'll be around Thursday. I'll let you know before then. Nice car by the way. Now I see where your forum handle comes from.
As far as what engine we are running, we are going to run a GMC inline six in the XO class. We have a 270 that we picked up for $50 just for mock up that was supposedly froze up. As it turns out, it's actually in pretty good condition and we will probably run it to start. The plan is to not dump too much time or money into it. Just a fairly basic build to get us going. Later on we can build a more serious race engine (probably a 302).