$235 to register them and you must pay the full $75 a year for the sticker. Historic program does not apply.
You need first find out if the plate number is valid for use. The 75s are... you need to send the plates and your ownership to the ministry with the $235 and they send you a letter giving you the ok to register them.
Here is a useful site. Explains the whole deal. I just cant justify having $300+ tied up in my plates.....