How to identify 0331 or TUPY head

Hi everyone, I've searched for this and haven't really found any good answer. I have an '01 tj with the 4.0 engine. I would like to find out how to identify what head my engine has on it. I've read that the heads labeled 0331 are prone to cracking and that they were changed to a head labeled

Remanufactured 4.0 OHV Cast# 0331 Cylinder Head

Clearwater Cylinder Head Clarification Needed (0331) Head Swap In

the 0331 head thread (help out if you have one!) - Page 5 - Jeep

Clearwater Cylinder Head Clarification Needed (0331) Head Swap In

the 0331 head thread (help out if you have one!) - Page 5 - Jeep

0331 head problems. - Jeep Cherokee Forum

Welp. 0331 woes. : r/CherokeeXJ

How to identify 0331 or TUPY head

Welp. 0331 woes. : r/CherokeeXJ