Been doing this for over 6 years now on the 07 up trucks (aug 2006 did the first one and customer still has the truck with no issues)
I have a machine shop I do stuff out of so you will need a machine shop to do this. You remove the spring assembly and you pull up the lower spring perch and you will actaully do 2 grooves. The top groove is the factory one. The middle one is put at .40 under the oem ring. Then the 3rd one is .620 from original snap ring groove.
Now you guys can go lower than 1 inch but just a heads up after 1 inch ride suffers and will kill the stock shocks a lot faster. Also remember to cut the front bumpstops down when you do this mod.
I can do grooves from 0-2 inches but if you want multiple grooves I have to have at least 1/4 inch between grooves if you have questions just hollar.
I have a machine shop I do stuff out of so you will need a machine shop to do this. You remove the spring assembly and you pull up the lower spring perch and you will actaully do 2 grooves. The top groove is the factory one. The middle one is put at .40 under the oem ring. Then the 3rd one is .620 from original snap ring groove.
Now you guys can go lower than 1 inch but just a heads up after 1 inch ride suffers and will kill the stock shocks a lot faster. Also remember to cut the front bumpstops down when you do this mod.
I can do grooves from 0-2 inches but if you want multiple grooves I have to have at least 1/4 inch between grooves if you have questions just hollar.