I'd Consider it
I have a 1977 C-30 (we're talking Catalina, right, not Cal?) that has had the steering upgrade. It's not too difficult to do it yourself, but I bet it's going to be expensive. I prefer wheel steering over a tiller, personally. I belive resell value for a boat with wheel steering will be higher than with tiller. When I looked at new boats, I wouldn't consider a boat with tiller steering. I may be in the minority here, but I don't think so. If you go to http://www.edsonmarine.com/ you can see their online catalog. I don't know for sure, but I wouldn't be surprised if the hardware alone cost over $2k, but in my view it's worth it.Good luck with your decision!Allen Schweitzers/v Drambuie, Hull# 632