Outer Limits 4x4 Board

hi ,
friend of mine has a 89 75`s and has drowned it i dont know if its a 2h or a 1hz could you please help also if any one has the bottom end that he will need or an idea on how much one will cost that would be good
cheers chris

2h

I seem to remember they changed to 1hz mid 89??

may 1990 was the first 1hz

plastic grill 1hz, steel 2h small front diff 1hz, large unbreakable diff, 2h...slow 2h faster 1hz...speed costs...how fast do u want to go

thanks for your help