i stood them on end side by side and the new ones were about one sixteenth of a inch shorter than the stock rods thats just a eyeball guess. may be they are shorter to enable a bigger cam latter but will work with a stock cam.just a guess.i would like to know i got the right ones before i crank it for sure
they will work you will take up the difference when you adjust the rockers. also try to measure them with a tape measure or micrometer to be sure of the length difference.