The good news is: Someone hooked up the neutral safety switch to a relay to prevent anything but neutral starts. And, rigged a cable from the trans throttle lever hopefully to the carb. Bad news is: Barring any other evidence, you have an early (pre '59) dash control operating a '59-'62(ish) transmission. And, someone added a length of tygon(?) hose w/clamp over the control cable. WTF! Oil leak control? Can you crank the engine in anything besides neutral? If you can start it in drive or reverse, you have a safety problem and should fix it.