rebuilding a 273 180 HP engine

does anyone have experience rebuilding this engine? Is there a kit that is available. I've never rebuilt anything before but would like to take on the project. I'm pretty tool handy but have never worked on cars just motorcycles. The engine is starting to blow blue smoke on start up and the first few minutes. I have a small oil leak but very minor. Everything else on the car is in excellent shape for a '66. Thanks, Mike