Toying with the idea to put Yella Terra 1.8 rockers on my LS2. The long block is stock. I assume it would be a good idea to change the springs while I'm at it. What would be a recommended set of valve springs for 1.8 rockers on a stock LS2 cam? I did a search and the comments seem to be all over the place and some of the suggested springs are no longer available.