Interesting. I can see how this may work on a stock suspension 944. Street 944's, especially those without rear antisway bars, tend towards understeer. Adding a lot of rake does the opposite, making the car more neutral in a fairly crude, but effective way. Finding a factory M030 rear antisway bar would do this as well, without jacking up the rear roll center, but that would cost some money. So, it may be the secret sauce for a Lemons 944.
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Karbuf,
I measure ride height at the underside of the rockers, about under the front and rear edges of the doors.