I bought 602 when it was 1,5 years old - the guy who had it build put a lot of money into upgrading the performance - hence chose the t56 magnum (same as viper and z06) for the strong 6 shift gearbox - I'm not an expert on the tranny... but I love the t56
(think the tranny depends on your engine)
I had the EFI installed (replaced a holley 850) due to: LOOK
damm too expensive, but what the heck... I like knowing it looks fantastic out there, and when I pop the hood... wow
I have the Steeda tri shifter - it fits right into my hand.
I also have the NRG thin quick release hub for steering wheel (theft protection - and quick change between the monolita wood and the fat suede )
I have extra
oil cooler and dual fans in the front for the look... I could go on, but point is - find one you like NOW.... upgrade it, or sell it and build your dream car next year
I gave 40 for the car and 15 in personal upgrades
You can ask / read for years (like I did
) but truth is... untill you have been riding one for some time you don't know what you really want.
Find a "cheap" one you like, and sell it next year with minimum loss - by then you will know if the snake got you or you're better off in a z06.