I believe the US bikes have different mounting between SP1 and SP2.
I have a 2000 SP1, but I've fitted a SP2 subframe.
The SP2 mounting bracket for the reg/rec measures 80mm between holes.
The SP1 is 70mm.
In order to use my SP1 reg/rec, I had to drill a hole in the subframe bracket.
If I remember correctly, the SP1 subframe doesn't have a bracket for the reg/rec, it mounts right to rail.
SP1 reg/rec on SP2 subframe, taken from the backside.
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