Thank you bob! Exactly the kind of stuff I needed to know. I understand they are brittle. But the motor runs as is. Started last weekend. Its actually my grandpas car. Im just doing the engine for him. Its what he wants. I got a great deal on it. Engine. Transmission and even stock radiator rebuilt and stamped from the local shop. picked it up for $500 for the bundle. It runs. Built Im going to do an entire rebuild on it. Not sure what I'm getting into yet. But i appreciate the help guys.
As far as what it is. 50, 51 Im not sure. I was told 51 but lets take into account Im 26 years old. I haven't seen many that aren't done beautifully. So I will take your word for it. Its a 50. :-)

I wont be spending 10k on it. Leave the motor close to stock. Probably duel carbs and alot of chrome. Not looking to make impressive 1/4 times. Just a practical pretty engine. I have ran into one snag maybe some old timers can help me out with.

The chassis has the cross member and traditional style slant motor mounts. The motor however has the "perch" style biscuit engine mounts off the water pumps. Seems to me getting the perch side cross members is out of the question due to the stock cross member being in the way.
Half of fabricating new perch style mounts and trying to make them look cool. Surely I cant be the first to run into this problem. Someone somewhere along the line had to have gotten this right, Any ideas?