I have a set (of 291's) that I just had reworked, but don't know if I would do it again. Probably could have gotten some decent aluminum ones for not too much more than my machine work, purchase price, shipping, etc. Are you planning on putting it in your 69? I am doing a similar installation, with a 68 motor in a 69, but if you are going for accuracy, it isn't really the way to go. The lack of accessory holes gives it a whole different look and layout from what the 69's came with originally- alternator is on opposite side, etc. Mine is a driver, so I'm not being a stickler. I kept the old heads and had seats done (whether this is necessary is a controversial topic, as other posts have covered)-I had a machine shop later advise me that if I ran a lead additive for the first thousand miles after the valve job, to let things settle in, I could have avoided the hardened seats altogether. Not sure who to believe. In any case, I am finding that there is a reason that people like the accessory holes. All the aftermarket stuff comes with them, for one thing. Are you going for horsepower, or authenticity, or a hybrid?