Quote:
Originally Posted by Jrboulder
I tore down an na transmission with about 100k miles, 10k of which were used as a DD with a regular 951 motor. The
condition was not impressive.
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Yep, I also know of guys who have done the engine swap and not replaced the transmission (standard 951 as well), the box did not last long.
Who is going to drive carefully with a turbo engine..?

The strain it places on the transmission is not trivial, that is why the turbo box is 'beefed up' and the oil is cooled, etc.
However, we are talking about a turbo S engine - even more horses, more torque, a few spirited clutch drops and the box will be toast.
Over here in the UK, if you did that swap and didn't upgrade the brakes - in the event of an accident the insurance assessor would inspect the vehicle and could refuse any claim..