i got a 71 sedan 4sp with a b/w diff
still have the shaft
want me to measure it for you?
nissan banjo style
b/w sailsbury style(bolt on rear cover)

so I have the equal length horns on my crossmember
adaptor plates are fitted
I have a propshaft that has the funny shaped flange on it, 2 straight sides, 2 notched out sides, doesn't fit, too small so does this rule out the H145?
The tailshaft with borg warner written on it doesn't fit, too large, so this rules out the borg warner.
So It must be the H165 prop shaft I require.
Am I on the right track?

Yes, if the rear flange of the tailshaft doesn't match the tailshaft of the diff, you have the wrong part.

cool, I'll track down another and give it a try, also, is there different alternotor brackets in the a series? can I bolt an a12 alternator on a a15?

bottom brackets are heaps different

top brackets there is a shorter and longer version, i think the a15 is the shorter and this could also be an issue if you have the wrong one

found the right tail shaft for $20, bargain. I've tried to modify the bracket, buy its a heavy piece of work hey, see how I go.
Thanks for your help guys.
Ben