Classic industries radiator finally gave out

according to their specs the depth of both the 2 row with 1” tubes and 2 row with 1.25” tubes is 3” which is roughly the same depth as my current radiator, as close as i can measure. I have about 3/4 of a inch in between my clutch and current radiator, whats the closest i should run the clutch to the radiator? 1/2”?

I know I wouldn’t want to run the clutch any closer than a 1/2” to the radiator.

3” huh? Hmm. Spec on the 3 row Champion I run looks to be 2.5”. I’ll measure it tomorrow, that seems a bit thin considering the tubes would be 2.25” by themselves.