So what will probably break when HP rises?

I remember the guy who used to own this car (we were beeer drinking and pool playing buddies and he didn't much tell me about the hotrod) say when I asked why he wasn't running it much that ...something about the u-joints. I was thinking the driveshaft should get looked at and not sure which this car has.

Thanks everyone. Besides, breaking at the track not only causes delays but can put down oils which piisses off everybody. Just last weekend we had a chebby rear axle come out - luckily he wasn't going very fast when it occurred. Also had a guy get squirrely at the finish line and from what we think he grabbed the wheel with both hands and hit the trans brake button. Car went sideways and hit the wall causing an hour delay. Don't want to be one of those guys.