i want to put a fj60 front cv driveshaft in my 71 fj40. from what ive been told i will need to change my transfer case and axle flanges to 4speed flanges to fit the driveshaft for the larger bolt pattern. i just not sure if the splines are the same and if this is possible. if i cant get flanges to fit from a later cruiser what are my other otpions to make this driveshaft fit. i thought iv seen adapters around...