They do have some problems though. Make sure you check that the body of the rocker doesn't hit the valve stem. I had to grind mine to fit . Also after about 1,000 miles my set started having the adjusters loosen up. It happened 3 times and I had to replace the adjusters with Harland sharp ones. But For the price of the link you posted you could buy a better set of rockers. I paid only $225 off ebay for my set. Also the prw rockers are really cat rockers.