318 to 360 conversion

So I am switching between 318 to 360. I have a 727 trans, and My torque converter came out with four small weights on it from the 318. Is it a 360 converter so I'm safe to use it on my swamp? It is blue with a number 1647 on it. I can't find anything online. Do I need to switch flex plate too? What can I keep and what should I swap. I'm on a budget too