new member looking for help with '73 175cc penton

[pitter]

does the 175 use the same size dynoplat as the 125? if not does any one know if i could find something like the 125 bosch points system. could any one tell me if the VIN: 7-21159524 is for a '73 jackpiner. just making sure i get a frame breather. i hate to ask for help and put a time limit on it but it will be sold within the next three days. thank you for your time.
Peter