I am considering buying a car with the zz-4 motor and a p600 procharger. The rear end went out 7 years ago and has only been started up from time to time and has sat in a garage all this time. Is there anything to worry about when buying something like this?

 

your question shall be answered with a few questions

what is the year and model?

what is the condition of the entire car. Powertrains can end up being the cheapest parts if you need extensive interior and exterior work

Do you think it's going to be a daily driver or even a weekender in less than 60 days and less than $2,000 expense plus lots of personal labor? If you don't have the skillset, tools and time, then triple the $2k.

So, answer the questions and you will have your answer