[Blas]

The angles of the seating surfaces are different. They will snug up, but they will come loose...(But see my nother note below in RED) I'll post a photo in my gallery of the two spinners side by side...BTW: Wheels are clearly marked on the back side as to who made them...Trigo or WAW.
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Other things to know:
Somewhere between 1265 and 1396 the Superformance rear wheel offset was changed. On the newer cars the wheel sets inboard by 1/2". This was done to accommodate wider tires. Also, the wheels are not interchangeable. If you try to put the newer wheel on an older hub, the spinner will run out of threads before the wheel is tight. If you want to change, you also need to buy the new hub.
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Early cars 0-200 or 300-ish: came with aluminum bolt on wheels with fake fiberglass center covers that looked like Halibrand’s with spinners. Look really good too. In the later cars of this segment you could pay extra for the TRIGO and forged spinners.
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Cars 300-ish to 800-ish: came with TRIGO wheels and forged spinners, but you could opt for the cheaper fake wheel covers for about $2,000 less.
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Cars 800-ish to 1200-ish on up used the new WAW south African produced wheels and their own cast spinners. There was some problems with some in the early casting process.
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Cars 1200-ish on up had the same WAW wheels and cast spinners, but the castings were re-engineered and they resulted in almost as strong of a spinner as the early forged Trigos. It wasn't the fact it was CAST and not forged that was the source of the problems, but HOW it was cast.
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Due to the contact surface of the taper at the spinner to the wheel, the forged Trigo spinners will work on the WAW wheels, but the WAW spinners do not work of the Trigo wheels. (But why take a chance?)
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