I just finished my entire Elco interior to match the Camaro seats I got. Used all SEM products and procedures although added a few cleaning steps. Started with GOJO and a nylon scrub brush, tooth brush and scuff pad. Then did Dawn the same way followed by SEM soap. Then I’d gotten alot of 95%Isoprophyl alcohol for the final wipe down. My favorite paint mixing shop matched the 96 Camaro color perfectly. I don’t like rattle cans for large pieces and since I have 6 spray guns and a good compressor I went that route. Turned out real nice, specially considering all the trim pieces and dash were different colors to start from different cars.