im looking into a k series for my 7th gen and im not a hundred percent if its necessary to buy the type r. i wanted to know if i was to get a jdm type r k20a or a type s usdm k20a if there was any difference if i was to completely build the block. i want to end up having the most powerfull k series i can possibly swap im i got 10 grand for the motor so just let me know what the bset combo of k20 if its a frankenstein. but if i was to build the motor with all new internals and all the whole 9 yards, would it matter if i started of with the jdm k20 or a usdm rsx base engine.. let me know and thanks for the help