What else would I have to buy to install this external steering system on my boat?
I am thinking just the hoses from the helm to the rams??
http://cgi.ebay.com/ebaymotors/ws/eB...ayphotohosting

A bunch of copper tubing and fittings, Steering wheel, Some more hoses and if you wanna have power assist your gonna need a pump with brackets & belts and a P-valve.

Also you may need a steering wheel or adaptor to fit with helm.

Another thousand bucks (or maybe two) should get it done.

http://forums.boatfreaks.org/showthread.php?t=9230

I talked to he guy, he said the steering wheel bolts directly
to that removable hub.
He has an Imco short drive on eBay for sale also.
What would that do for a little 18 Donzi?

They're not all the same.

Thanks
I did confirm my steereing wheel will fit.
So what copper tube would I have to buy? I have never seen a boat steering system with copper tube used in it.
Also, what would the Imco shorty drvie the same guy has for sale do on my 18 Donzi?

Copper tubing? I have never seen copper tubing used in a performance marine steering system before.

What you'd need beyond that would be the all the hose from the helm to the back of the boat and the fittings. Assuming you have power steering already, you will probably want an additional fluid reservoir. The steering hub looks awfully long, so you'd want to be sure it isn't too long and doesn't put the wheel too far back.