hey guys i just got sigma lca's and was after ra40 tierods and rack ends so it'l fit in but all they had was a ra60 which i had a look at and after a bit of researching i read in an old thread that the rack ends were longer than ra40. is this correct?

can i just use the tie rod ends or do i need to also use the rack ends?

basically the wreckers will only sell me the whole rack so i'l put in the rack ends and tie rods which will be even longer than ra40. is this a good idea or will it be too long now? any help would be great as i wanna buy it tomorrow.