Almost certain that the Vin number is only stamped on the floor next to the drivers seat on the Sierra.
The only other one is on the Vin plate riveted to the slam pannel.
Will you need the clutch cable ?? ..... You may find it a tad to long for the Roadster.
I bought an early Capri one for mine ... looks to be an ideal length & as a bonus, has an adjustable section at the gearbox end .
