nitrus: yeah...for manual, i recommend bullet...but some require reduce more sound , so i recommend midbox...
alexklg: replace ur midbox with bullet and about ur muffler...erm, dont know what is ur muffler style...manual use straight flow better...but im worried maybe ur SRM 1.6M is something like GEN2 case...manual dont suit the straight flow..the pick up loosen for gen2...got special stuff for gen2...
sky: im saying midbox...not bullet...for bullet, the most rare bullet is those straight up but from one side cant see the other side of hole...cant see through the hole coz of the spiral design...u seen it before?