Wanted: 12v dynamo or alternator

need to convert my 6v system to 12 volt so looking for perfect SH dynamo or alternator, dynamo would be simpler as alternator i will need pedestal fuel pump and fan bits plus belt.
Anyone?
Simon

ive got a dynamo generator and fan in very good condition

I sent you a private message but how much do you want for the 12volt gear? thanks simon

sorry for delay,email sent