^^^^^^^^^^^^^^^^^^^^^
the other big thing to consider is aftermarket support/availability of parts too! Many people would love to get out of s-chassis, but for some, it's just not economical to do so. I know I have somehow invested/acquired too much to just step away from my s-chassis and build something new that I have NO parts for.
To the OP: Your best bet may just be to wait a few more years until c33's are easy to import and then just swap everything from your s-chassis into one of those and have a kick-ass 4dr!
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