yea the k's sounded nice but to be real a built gsr or any bseries motor in fact will walk all over k's iv seen it in person.. and plus i only had 400$ in both motors.. and it just coast way to much money for a k swap. i think i did good i mean its a 2700$ swap for only 400$ i had in mine... i just think over all the k series are over rated unless u have the money to put in them....