With my bad luck with my current motor and with the money Im putting into my new 4.2 (and M90 soon after) should I upgrade my rad and cooling fan? If so anyone know of a good rad, and or fan to go with?

Thanks,
Matthew

 

a 97-98 Cobra Fan or MarkVIII Fan should be first on your list.

The 3 Core Mishimoto rads are better now with the new rubber isolators but its up to you if you want to risk it. Front end flex causes them to crack. If you have a super rigid front end then you should be ok, if your stock then even the softer isolators may not help prevent cracking from flexing.

Other companies had this problem too with weaker 2 core rads, Mishimoto and others went to a 3 core which made it stronger and better at cooling.

 

If nothing is wrong with your current coolant system then your fine sir.