Looking at buying the piece I was just wondering would they hold up after install my exaust also being because of the heat they make a carbon fiber one too but if the fiberglass will hold I'll go with that

 

I just installed the AK V2 CF Diffuser yesterday. Very doable by yourself. Just make sure you wash the edges where the 3M tape goes well (with soap, then rubbing alcohol). You could also use 3M adhesive to reassure yourself that it will never fall off (I didn't use it).

Otherwise, yep, very doable by yourself! If you had a friend hold the diffuser for you so you can use two hands to really press down on the tape is a bonus. Good luck!