Transmission noob questions

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The transaxle seems to be the biggest sticking point on these cars. Having very, very limited experience I will give you my 2 cents worth. I have a car with a Mendeola SDR5 with 4.11 gears. Seems that by what everyone says this transmission can take the 500 HP with ease, some of the Porsche units seem to be questionable. The 4.11's on the highway are too much, 3.55 would be better but not optimum. Mendeola gear ratios are perfect for for an LS engine, Porsche transmission seem to have way too low 1st gear sets, and the gearing is just not right for an LS engine. Mendeola does not shift like all the factory transmission you have ever driven, I am going to try and do some changes to get this to work better, but according to others it will never shift like a factory OEM transmission, Porsche unit will shift like an OEM transmission. IMHO this car really needs a 6 speed transmission, but there do not seem to be any inexpensive options out there. A Ricardo would be a dream, but nowadays they cost almost as much as a complete GTM kit, although once in a while a deal comes up on eBay. I am not sure that you will even save that much money by going to a used Porsche unit, they have gotten really expensive, and some of the ancillaries needed are more than what you will pay for the same parts for a Mendeola... Seems that the only viable option at this point in time is a Mendeola, unless you have a way to get a used G50 at a really good deal. Maybe when the Corvette C8 comes out there will be a transaxle out there that was designed by an OEM, with OEM reliability and driving characteristics, and with gearing perfectly suited for an LS engine. We can only hope :-)