H18 SX

Are the H18SX trapeze wires the same as for the H18? It appears that the side shrouds are longer to accommodate the taller mast. But the trapeze wires come off the same tang as on the H18. If that tang is higher on the SX and the shrouds are longer, shouldn't the trap wires be longer, too? If so, I can't seem to find them for sale.
SX trapeze has a different part number in the catalogue 68503501

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Jeff
Houston TX
1986 Hobie 18 Sail# 13031
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Thanks. I kept looking and found the SX trap wires as a separate item.