New guy has turbo questions

[MDG27]

Looking for info & from my reading it seems everyone one here has good knowledge. Helping a friend that does not have internet access, he has a 1973 impala 2dr w/ a 454 & wants to put on a single turbo, not sure what size turbo or if their any kits out their that include somethings needed, if someone can help us, I was also wondering about tuning & fuel as will, thank you