Hey guys i am going to be purchasing and installing my 1st cat back exhuast. Im getting a greddy evo2 for my 98 gsr. 1st question is should i replace these two gaskets? (Part numbers 24 and 18

http://www.acuraoemparts.com/delray/...All&vinsrch=no

anything else i need to replace? and could i just get some overall tips about installing the evo2 on my gsr?

 

don't they come with new gaskets?

 

exhaust should come with everything you need, dont have to buy anything extra