I have a FJ62 in Michigan fitted with ARB lockers that I would like to install in my 1980 HJ45 which is located in Costa Rica. Because of the expense and hassle of pulling and shipping the differentials to Costa Rica, I want to make sure that they will fit. The HJ has a semi-float rear axle as does the FJ62. I believe the axle shafts have the same spline count on both trucks but I'm not sure if the drive shaft flanges are compatible. Any information would be greatly appreciated.