I have been looking for a TH700R4 for my Transam (ok its not a K5 related, but I have a K5 ). I am buying a ZZ383 and I am sure that stock TH700 cant take the stress. I remember some companies where building a stronger TH700 for street machines and trucks but I cant find it on the web (have googled it and searched the bord). Does anybody know where I can get a strong enough trans. Thanks, Jon H.