Veggie Oil on a 300 SD

[DrewGerhan]

I went by the pumps yestarday and reg unleaded was 2.49 and walked by again this afternoon and i noticed it was 2.79 which can only mean that diesel is probably in the 3 dollar range. with this summers prices only expected to climb, i really want either a svo or a wvo system. my only hang up is how to do it. has anybody done this in a 300 SD? i have a 1981 with 170,000mi on it. i want to make it myself rather than buying a kit. i understand the whole idea that you have to heat the oil but i have no idea how to. some suggest using the coolant but i have not even the first idea on how to tap into the coolant supply. ive ofund a website that sells filter heaters and injection line heaters, but i assume i need more than that. i also dont have a clue on how to be able to change from the fuel tank to the oil tank after the motor is warmed up and when i need to purge it. if anybody has any plans, pictures, and/or advice/procedure on how to convert my 1981 300 SD to a two tank wvo/svo system that would be great. also if you know of any websites besides eBay on where to get the parts that would be great too.
thanks in advance