Question about part ID and hump install

[MyR/T]

Hey everyone. I have two questions on my 70 challenger. First I'm installing a new 4 speed hump on a new floor pan and need to know how much of the floor pan actually needs to be removed under the hump? Second is I need the name of the part or a AMD part number for the part under the tail panel. The rear frame rails are welded to the back side of it and I think the rear valance brackets are bolted

 

[terrywalker]

Hey everyone. I have two questions on my 70 challenger. First I'm installing a new 4 speed hump on a new floor pan and need to know how much of the floor pan actually needs to be removed under the hump? Second is I need the name of the part or a AMD part number for the part under the tail panel. The rear frame rails are welded to the back side of it and I think the rear valance brackets are bolted

View attachment 50142

Rear Cross Rail. Classic Industries part number MM1284B may be the part you're looking for.
Terry

 

[KATSAAR]

set the hump in place. scribe around the outside.
remove the hump, scribe a line 1 inch in from the outside line.
start cutting

 

[340challconvert]

Just be careful and aware of the location of the torsion bar cross member when cutting the floor for the 4 sp hump!

 

[Adam]

set the hump in place. scribe around the outside.
remove the hump, scribe a line 1 inch in from the outside line.
start cutting

Agreed. You need to remove nearly all of it for clearance. Use a pneumatic body saw, they are cheap, fast, and easy to cut on a line. Take measurements of any console brackets you may have, but verify fit with the console and shifter location.

 

[MyR/T]

Thank you everyone. I appreciate the help.