I have got a 4 liter h2 engine in the back of my toyota 1986 hilux. I need more power and would like to put a 4.2 turbo in its place. I need to use the 4 speed gearbox it is hooked up to at the moment due to its short length. So is there a back plate for the conversion out there some were. And please if anyone has any-other ideas please reply. keeping it diesel is important to me as I will be doing some long stages and need to keep the weight down. Thanks