Jun's springs are actually not very good at all. they barely clear the cams and that is only after you install, measure height, re-shim, install, measure height..... and so on and then they still barely clear.

Go with the Rocket motorsports valve springs, they have two Gens and you can mix and match inner and outer springs to get the seat pressure and lift you need. Portflow inner and outers work pretty good too just have alot of seat pressure at no lift so they may wear more, on a daily driver.