GM 3.1 engine swap question
 

Hey guys,

Is there a website where I can find what GM engines are interchangeable?

I am asking because I have an 03 Grand Prix SE with a dead engine. My friend just crashed his 99 Monte Carlo. Both have a 3.1 in them. I would like to just swap out the engines but I don't know if they fit. I am having a hard time finding anything online showing what engines would swap out. Any help would be greatly appreciated.

Thanks,
Phil