Radiator
 

Would be better to by second hand or go for a new as I've got a coolant leak at the top right hand corner I think as the matrix pipe work in front of the radiator and behind the grill on my classic is wet and smells of coolant was looking on the mishimoto website as an upgrade option when I eventually send the car away for its engine rebuild as I'm now going to get the sti v8 bottom end forged before it gets all fitted .

I went with an OE one that I bought from someone who had a like pretty much brand new and barely used one.

Apparently they are just fine up even up to bigger power too.

Mishimoto is a great brand, Dave has one and loves it and it looks great and they are awesome pieces of kit.

But the most common conclusion I was able to come to was that the OE Koyo one is very good and just fine, especially as it was a fraction of the price. That is what I got.