How do you do make a jeep wheelie in forza?

Hi dear, I'm not so good in English, sorry, OK, some of my friend make wheelie with Nissan Junior (pickup 1987) he never told us about the trick, but I guess the trick is included 2 factor: engine power and car weight. he did it with his pickup fully loaded, then fully throttled with 1 gear and release the clutch! the backside of pick up was heavy and the car was powerful (for it's type :P) it must be basically available for Jeep, because jeep are most powerful and light whiter than Nissan Junior! also I want to know how does it make? :)