Why does the thrust matter so much ?
just from Wiki,
Tornado GR4 = 0.77 Thrust-to-weight ratio (61,700 lb MTO v 2x 17,270 lbf = 0.56 ? maybe .77 is at leaded weight)
Buccaneer = 0.36 ( 62,000 lb v 2x 11,100 lbf = 36)
So would it not work ?
and the F-4M (56,000 lb v 2x 20,500 lbf = 0.73) so you might have to reduce loading a bit but should it not work ?
it's simply not feasible unless going at it from the design phase
I agree restressing later on will be a nightmare and will cost to much.
I don't even know where to begin with that though suffice to say what shippy2013 says is correct, in addition to which the Buccaneer has nearly twice the wing surface of a Tornado resulting in a MUCH lower wing loading.
All the extra modifications and additions necessary to the basic Tornado airframe would bump the weight up to such degree that not only would your initial useful load (armament and fuel) suffer but your bring-back load would be then become minuscule necessitating the jettisoning of stores on a routine basis.
As such I will reiterate my first sentiment. Tornado cannot be navalised in any recognisable form.