Skinnyyevad

Hey everyone, new to the s30 chassis and been looking for a car for a while, I've found an auto for a decent price and just wondering if anyone can help me with a quick question. I want to put a rb25 into the car, typical I know, but I'm curious to know if I buy an auto L26 if it will affect the trans when coming into the cabin (going from auto L26 to manual rb25) just don't want to make a purchase to later find out it'll be too much work Regards, Hayden