For tilt? I wouldn't think so. For trim, you can probably find the hydraulic setup by doing a little searching. Depending on the year, and what parts you wanna' get hold of, you could do that.
sell what you have for a small pile of cash
pour contents of your wallet and bank account onto the pile to make it bigger
take pile of cash and buy what you want
no, you can not convert a stringer to hydraulic tilt
yes, you can add the hydraulic motor mounts for trim