Everything is completely factory in appearance and function. I now am getting 35+ mpg in a Toyota 4runner with 4wd that I used to get 15mpg. I am also now running on a waste product like waste vegetable oil. The ridiculous thing is that the rest of the world gets these vehicles standard, we have to pay to convert them.
That's quite a jump in miles per gallon, but we know that diesel get inherently more mpg than petrol engines. I've asked Mark how much these conversions cost him, but suffice to say this is one way to get the car you want to run on the fuel you want.
UPDATE: Mark responded:
The conversion including engine, trans, wiring, gauges, and labor to install was around $15k. They gave me all of the gas engine etc back and I sold them on eBay and recouped approx. $2500. The vegoil conversion added another $3k onto the price. Absolutely the most honest, straight-forward guys I've ever dealt with.
[Source: Diesel Toyz]