Ernie, Jack Knight steering racks were used on Morgan's from 1983 until 2007 when the firm went bankrupt. They use one piece steering rack bellows which may explain why you were sent incorrect ones as Quaife racks requiring two gaiters were fitted to later models.

There is a thread on the subject here including fitting cheaper options from Saab, Daewoo etc. as shown below.

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Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone