A904 transmission for 318

Hi, I am looking for an a904 transmission with the torque converter that will bolt to my 318 engine. I am restoring a 70 dart swinger. I am in NY near Syracuse. I have an a904 slant six trans I recently bought mistakenly thinking it was the right fit. I can trade this if wanted as part of the deal. Please let me know if you are nearby and have a transmission for a decent price that will fit. Than you.