What parts in the valve train can I reuse? Can I reuse the: cotters, valve spring seat, valve spring retainer, valve stem, valve guides? I plan on rebuilding with oem parts this time because they are the least expensive and later get a 07 head set up from RHC. I know this might not be the most logical thing but money is tight at the moment and this will keep me running. Yes I'm getting the seats cut too. Thanks for any info.