yup, phil is bang on the money, the 90spec fuel sender is tiny compared to the pre 89 sender! i stupidly bought a replacement sender for my 88 tank, and bought an 90spec sender, and it is less than half the size, just falls straight thru

also im sure i got told back at the time that u needed the correct spec clocks to match the sender? cant find the old thread, but im sure thats what i was told by numerous people