So...you disagree with the the current rules-set, and you'll just disregard the ones you don't like ?
What other rules might you rationalize away ?
You've been building that Volvo for many years, and while you've never turned a lap, you seem to have all sorts of problems with it that others don't. Dana 30 rear end, big axle tubes out each side, holds lots of oil and has a reasonably big surface area to dump some heat. When I was racing a 142 with a Dana 30 solid axle, I had all sorts of issues (gearbox, engine, etc) but never a problem with the diff. None of the other Volvo guys with that same axle seem to have overheating diff issues. A friend with a "flat-nosed turbo" 240 rally car had occasional diff & axle issues, but he was running ballistic power levels in a difficult (pro rally) environment, far beyond what IT-legal has to deal with.
Most likely, you've picked the wrong class for your project. Feel free to build a GT car...the rules are right there in the GCR...you can modify and add all sorts of whizz-bang stuff, legally.
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