Ok what's up guys I'm having my head built bye tpr in Cincy ohio there doin my drag cartel 2.2 s supertech spring kit ( springs retainers and seats ) and I'm just wondering since my valves are stock what keepers do I use? Do I just reuse the stock ones or play it safe and buy ones from supertech rated for my springs or what?.......please help! Ps I'm also replacing seals with either supertech or Oem!