Don,
Sorry I missed your call.
Seems my memory isn't that bad after all, correct in as NO single groove HB's.
Even a bare bones car WO/PS-PB would still use a fan & alt belt.
Question is which HB are you using on your 250. 1BC or the 4BC?
Pics 1&2 below are 4BC, Pics 3&4 1BC-250.
I don't think you can mix and match, i.e. '66-'67 WP, Fan & Pulleys on your 250.
I could be wrong so anyone know please chime in.
__________________
When I die, I want to go peacefully like my grandfather did, in his sleep.
Not screaming like the passengers in his car. 
Last edited by Jeff Hamlin; 06-12-2015 at 06:06 PM.
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