Look, you need to find a valve spring compressor that will work for the 4G63 head first. There is one that will bolt to the head and you can turn a compressor that has an opening for the keepers. Talk to TR shop "IllegalModz" Seth there has a great valve spring compressor for that head. Get a comp tester and plug it into an air hose and a compressor as stated. Its not that simple, but its not very hard at all. If you are not confident, you WILL NEED to have someone of experience do the job.