66 Cuda 360 questions

Thanks for the replies everyone. For now I plan on using my 273 manifolds as I just had new glasspack duals put on in October. Yes I am doing this swap to feel more in the seat and it is a car I will be driving to and from work in the summer. I will find out more on the trans. when I get it home tomorrow. You all have some very good points. If the trans. wont work out I may get a flexplate and keep the 904 for now as I collect 4 speed stuff that will work. Right now it is starting out as a cheap swap for more power. I paid 200 for the engine and trans. and have a 200 mile roundtrip to get it home.