Trying to mount my r1144n koyo and the factory holes are about an 1" or so off. Was this normal for others?

 

I had that problem too on that rad.Just drill holes up higher.
Test fit it to see where you have to put them,just to be safe.

 

I have a koyo n-flo also, and it lined up just fine on my car using the oem s5 radiator brackets. Your radiator bracket s4 or s5?

 

there are 2 types of Koyo.
My old one fit with no problem.I changed to the "better one:" and I needed to drill the brackets.
Oh koyo r1144n on an s4 chassis too.

 

I thought the S4 and S5 rad brackets & their mounting points (to the rad) were different. Koyo R1144N (the only FC N-Flo) is listed as S5 style on the Koyo website. I have an OEM S5 I can take a look at later, but here is the Koyo R0181 S4 radiator with S4 brackets/shroud, all lined up fine. In any case, just drill your brackets...

 

I've had mine for about 8 months now. When was this changeover date?