Just picked up my new project,72 240Z. It's been on a non op for 5 years and sitting but is a really straight and rust free Cali car. I got it fired up and running but really rough. Plugs cap and rotor were on the menu but I only got to the plugs since the 240 cap and rotor are way to small for the distributor in the car. It's an l24 block with E88 head....... Could this be a 280 distributor? Are they interchangeable? Or maybe after market? This is my 5th 240 but I've never run into this before. Suggestions? Thanks.