steering shaft coupler clamp

you mean this part http://www.dodgecharger.com/forum/index.php?action=dlattach;topic=97615.0;attach=189914;image

I believe it is still available I have seen someone list it for sale in the last year don't recall who. I think this clamp was factory installed on 80's trucks and vans so you could likely get one in the junkyard for almost no cost of time or money.