I am looking to buy a 98 to 02 f-body and a friend of mind said that there might be a slight difference in heads between the years. He said something about a triangle on the head ment that is might be the better head. can anyone help with my question. is there a difference and if so how do you tell. thank you.

 

https://ls1tech.com/forums/new-ls1-owners-newbie-tech/213148-jrp-s-faq-commonly-asked-questions.html
Read that first.

 

There are different casting numbers for different years.
805 : 98
853 : 99 - 00
241 : 00 - 01
243 = LS6 heads

 

Triangles are a LS6 "243" head.