2nd gen DSE sub frame floor mods

[73camarols1]

Hey I'm planning on going to DSE front sub frame in my 73 Camaro. I have a ls1 and t56 out of a 2002 trans am. Im trying to find out if the trans tunnel has to be modified? I was looking over SW silver 2nd gen build pics and the only thing I could see was a little bump they made right next to the gas pedal. Thanks Bill