Good luck dude. I think some of the boys have used 4cyl toranna shocks but they are still an old and small type of shock, possible only come in oil (not sure on that). I found some NOS 1K shocks in a dingy little parts place, but they are very old and only oil. I started to talk to pedders about getting some made but they didnt want to know about it. If you find anything on your quest please let me know, I would love to upgrade.