I currently run a complete H150 [drum to drum in my B110 Sedan, straight swap apart from having to run the 120y drive shaft, u-bolts, base plates, rubber blocks [120y leaf springs are incased in C section type rubber blocks]. It is also a good isea to use the centre pin from the 120Y also. [its longer and locates the diff housing. Nearly forgot to mention, dont forget to grab the 4th leaf spring from the donor 120Y [smallest] and include it in the stack. stiffens the stack as well as makes the whole essembly fit better as the U Bolts are longer than the B110 ones