Conversion Volvo V70 I T5 automatic with front wheel drive on four wheel

Hello, I’m new here and have very little idea of technical things. But I have a wish, namely to convert my V70 T5 239 PS automatic front wheel drive year 1998 to all-wheel drive. I also own a V70 2.5 Turbo manual transmission year 2000 with 194 hp with all-wheel drive where the engine has smoked (valve burned away). Now I want to make out of the broken AWD Volvo a T5 AWD Volvo with automatic (I prefer) or switch, because the money for a Volvo T5 R is missing. Now my question. Is this possible at all and if so, how elaborate is the matter? Thank you for your answers Andreas