Question about Blazer manual tailgate crank

[68Timber]

These things are plentiful on ebay for around $25 and listed to fit 73-91. In the Classic Parts catalog, they only list a complete new manual crank for 73-78. For 79-91 they list the handle only.

The handle is gone off mine so I could get by with just a handle replacement. But what's left has pitting, so I'd rather replace the whole thing. So I'm not sure who to trust. Does anyone know the scoop on these rear window cranks?

Thanks.