The only thing mentioned here that would be only for a track car only would be The 3 inch wheels plus the 90 / 10's. And if you don't know that these drag only you should pack it in. None of these things I explained have anything to do with modifying or cutting any moving suspension parts.But thats ok I can understand that not all of us have the comon sense to know better. So! Just so you know these procedures are for, As Mentioned Super Stock spring use. And this answer was for the person who asked about suspension preload. For you my sugestion would be to install what ever parts you have on hand and if they don't fit get out the saw and proper heavy hammer to make the correct adjustments for your professional modifications and installation proceedures your good buddy suggests. Steve