Currently running a 3" single box system (de-cat) but going to add another mid-box next week. However been getting some fumes in the car lately and a "ticking" when cold, so pretty sure the manifold is cracked. Now an RS2 replacment would involve shorter head studs and be a rare find, so I was wondering if the Wagner/Furans or anyone else's was a simple bolt-on option for the standard ABY without the stud swop issue or do all EM Upgrades need the shorter studs?
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