[TopJimmy]

Guyyyyyyssss

You shouldn't have to cut your diffuser. I have Mike's V-style tucked in right with an AA Single+Mad Max. Just remove Max's added aluminum heat plate (2 small hex bolts w 2 crown nuts), and then add one 13mm (?) upside down flange nut above the rubber exhaust hanger mounts on the rearward long studs (one each side, as a spacer). This lowers Max just enough for the diffuser to tuck in. Only the 2 original mounting screws are holding my middle diffuser on right and the dumps barely touch the fins. It all works (except my trunk-kick, which I hated anyway and had coded off).

Mike's carbon fiber hasn't melted or warped, nor has it even felt hot after my drag strip runs with the dumps open. I guess only the plastic or diffusers have a melt problem, or I'm lucky. I do have the real Vorsteiner GTS rear 1-piece to mount in the near future, but Mike's piece that I moved over from my F80 shows me there's no problem. It's exact same size as real V.