Hi guys is there anyone running one of these i have the following mods ...heatwrapped mani and down pipe,decat,stainless rearbox,cai including hks mushroom filter and hard pipe. Was only going to put slightly more than stock bar 3.3ish ,are they worth it?? Easy to install?? Anything i should be wary of?? Cheers guys oh its a n15 phase 1 gti