REPLACE RADIATOR

I believe 7.4

I believe it is a 5.7 but how do I know for sure?

Hello,

Here is a guide that will give you an idea of what you are in for when doing the job.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

and

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Here is what it will be like on your car (below)

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken