swaping auto for manual in 82 meteor

[dumb blonde]

OK we are looking at swapping the 3 speed auto gearbox in a GA/GB meteor with a 5 speed manual gearbox from a KB Laser. Is this a case of simply bolting the manual one on? Or is there going to be 'complications' with removing the torque converter from the flywheel and replacing with the clutch assembly? The Gregory's manual doesn't seem to be too clear on this point. (Not that it covers this sort of job)
Any advice would be most welcome. Thanks