Set up for 360/380 magnum crate engine

Hi, I,m a new member and have a question. I have a 71 Demon 340, Trans is 727 with shift kit, 2500 stall, rear is 3.23, this car is mainly use for street and weekend show. This summer I broken-down my motor then I’m buy a new 360/380 magnum R/T crate engine, I want to know if I have to do any modification to my set-up or it’s OK? I have a holley 650 mecanic double pomper and an other trans 727 with manual body valve. Can I use this caburator for my new 360 engine and witch of these( trans 727) is the best for the 360/380hp? I will install a set of 1 5/8 header TTI’s on my 2.25“ exaust, it is good?
Thanks for the answer.