Actually.......'84-85 SVOs came with .63s turbine housings and no water cooling, 85.5-86 SVOs had the .48 with water hookups. All or nearly all the service replacement turbos had water cooled centers, so it's not surprising to find a wet center turbo on a car that didn't come with one. My '84 SVO is a prime example because it has a wet center.
The biggest application difference between the SVO turbos and the Merk/TC units is the compressor housing. The Merk/TC T3s have a two-bolt compressor outlet whereas the SVO has just a hose connection. The SVO compressor housing also says AiResearch on it, not Garrett.
This is a .60/.48 Merkur turbo I have. Nevermind the HX40 on the right
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