Mary,
If you have a Taipan it would have been fitted with a Superwing. The Superwing was designed by AHPC and they fit it to all the T4.9s.

Cary,
The difference between standard and Superwing as well as other wing mast sections is basically the shape of the mast.
From memory I think the dimensions of the Superwing is 63mm x 126mm.which is a ratio of 1to2.
The standard shape of an aluminium mast is more like the shape of a pear than a wing with a ratio of 1 to less than 2.
So comparitively speaking the standard mast is fatter and pear shaped while the Superwing is more of a wing shape.

There were other types of wing sections.
Below is some of my observations over the years as I recall them.
The first aluminium wing section that I know of was the Sori section. We imported them from Italy for the A class in the early 80s. These were in the days when we still had pin head sails and the Sori section used to be tapered and this plus the importation costs made them quite costly. So the Aussie wing section was designed to be used on the A class. It was made quite flexable but ended up being too heavy to be a good mast on the A class.

When the Hobie 18 was introduced to Australia the main 18ft class was the Stingray. To keep the Stingray ahead of the game the sail plan was expanded. This expansion involved a jib of increased size. A larger mainsail on a taller wing mast section replacing the shorter pear shaped section.

Only problem was the Aussie wing just didn't seem to be able to take the compressive loads of a 31ft mast with 2 on the wire and tended to break in strong breeses.

AHPC designed the Superwing and it went on the Stingray providing the new sail plan with very light wing mast that was strong, stiffer and reliable.

This was where I first observed the Superwing on a Stingray and I think this was the original purpose of its design.

When the Taipan was designed the first few had an AHPC version of the Aussie wing but they soon changed to the Superwing. The difference between the Superwing and the original Aussie wing is several kilograms with the heavier Aussie wing being also smaller in both minor and major axis.
Smaller, more flaxable and still the Superwing is lighter in weight.
It has been obvious from the start that the Superwing is an incredibly good mast section and looking at weight, robustness and pefofrmance, I have not seen a better aluminium mast.