[onefast5.0]

I am doing some research and planning a build in the future.I have been checking out the different options and reading different posts from other members.
I was looking at a base kit,that pretty much means that I supply everything,I think.
My thing is I want to go with a 351 motor,not sure of trans.As fas as rear end,could I just pick up a mustang rearend?
I am trying to plan things out as I said before and I want to see what my best options are and keep to a budget.I would like to build a motor,never actually built one before though.This would be a first.I have more questions,as I go along I will ask or see the answers as I go through the forum.Thanks for everything in advance

I am definitely open to any and all opinions on everything though.