Yeah, the rails are interchangable, so if the 69 rails don't have the same hole spacing, you can just change to the 70 rails on the 69 seats. However, IIRC they are exactly the same for the 69-70 years. Those 69-70 seats on Ebay at currently 49 bux looks like a good deal. There are several days left, so just put it on your watch list then bid at the last minute. The seat covers and foam may have to be replaced, but that's what restoration is all about.