The quick answer is you don't change any engine internals with this kit. The long answer is if you keep the boost low which keeps the combustion pressures low you can get get by. On most applications with increased pressures (turbos and blowers) the compression ratio is reduced so you have less danger of predetonation which will destroy the pistons and rings. The camshaft is also usually replaced to change the valve timming to further optimize the increased breathing that the blower can achieve. On the Delorean it is not recomended to go above 6 lbs boost and if you can live with less it is safer. I also wouldn't recomend sticking a turbo on an automatic, it won't take kindly to the increased loads imposed on it and you will have to do something to handle the vacuum modulater which needs a vacuum signal, not 6 lbs of boost! The Island kit is a single turbo and most people with it notice "turbo lag". The Legend set-up which has 2 turbos supposedly has a lot less lag. Another point if you are interested in adding the turbo to your car. There will be some machine work to install it like drilling and tapping so if you where to remove it the car would not look origional anymore and if you kill the turbo they are expensive to have rebuilt. The venders get around $1000 to install a turbo kit (just labor) so use that as a measure of the amount of work that that is required. Mark Levy is our resident expert now on the Island and Legend turbos and he can better compare them for you and explain all of the things to consider if you are interested in installing a turbo. David Teitelbaum vin 10757 --- In dmcnews@xxxx, <dmc4687@xxxx> wrote: > So, with a kit like this on the PRV you don't have to replace any internals > with harder pieces? Forged pistons, lifters, etc.? > A mustang guy at work has been contemplating supercharging his pony but hates > the idea of totally tearing down his engine to do it right and won't do it > wrong. Which brings up another point; have there ever been any supercharging > kits for the PRV? I know they are still exhaust restricted.