Shine used to carry Boge struts and shocks as well. When I was running the UMass car thats what we ran all the time and never had a problem with them. I think they were about $55 each but that was a couple of years ago. Bildon sells the Bilstein race struts and shocks but I thought threaded body shocks were illegal, but I could be wrong I haven't looked at IT rules in a while.