The R8 one looks great i got one myself best bet on the R8 ones is to keep a close eye on ebay as they can be had for a snap bought mine for £24 posted
i believe a porche one will fit???
My mk5 gti kept blowing the top off the standard one then put the R8 on and it blew the bit of plastic between head and cover so now its sat on the head of engine havent had any issues at all
Keep a close eye on ebay best bet dude always a bargin to be had
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