Zak

Hey guys I really need someone who knows more than Me I have a gti Sentra 1991 with a front wheel drive ca18de 5speed and I was wondering how hard it would be to swap some sort of sr20 maybe out of a Primera ect if it would mount straight in to my Sentra as I love that little car and want to make it go 200 as I almost destroyed it at 175 the other day also if I was to get a Sr can you get 6 speed boxs? Thanks heaps for your time and knowledge Zak