I will go back and look, but essentially, the S:H floor pan gets swapped into the floor recesses of the GN pan, then drops on to the JoHan GN chassis.

(Note, the term GN is somewhat misleading - the body is a dead bang perfect street Grand Torino sport with a flat, opening hood. Ditto the chrome - the kit supplies blank out parts. The Torino snap kit supplies the stock interior, magnums and if desired, the scooped hood. )

IIRC, the suspension bits swap or from JoHan, are fairly close. Revell engine compartment is jiggered to fit the open-hood Torino GN body.

Engine is a pick 'em situation... lets say I'm eagerly awaiting both the Boss 351 release and the return of the '70.