The 2 holes that hold the ac condenser on my r53 are leaking,i don't know why, the condenser is held just fine but coolant is leaking from the secured area. Im in the process of purchasing an radiator. I just wonder if the radiator on r50 will fit well or interchangeable for r53. thanks

 

No...
Just buy the right radiator...
They have different part numbers for a reason...
Since you can buy cheap aftermarket clones of the OEM for $100, or nicer units for a bit more, no reason to juryrig a solution to fit the wrong part in...

 

The r50 rad will fit into the core support, but you won't be able to put any hoses on it. I found this out when Cockauto sent me the wrong rad, needless to say I was pretty pissed off when it had to come back out.

By the right rad