Are these interchangable,width.height etc? Anyone shed some light?

Se will be narrow and Zk wide so not without cutting and joining. The scuttle also has part of the swage line in and there a a few different types of swage other than the Zk

if our are after a ZK scuttle I have a red one FOC if you can paint it

Thanks for the kind offer...but I'm wondering is the SE the same width as a Champion book chassis?

I think uncle ron copied a SE or a pre lit for the book chassis so Im betting one of the scuttles will be spot on