i had previously had a turbo ls motor...after blowing that one i had an option of buying another ls motor or getting the b16a for 50 bux more..smaller engine with vtec...when ur boosting and vtec kicks in on the highway theres nothing like it, it jus pulls hard..but i went to a smaller engine so im experiencing some problems with torque but if u decide to go with the gsr u should be fine =)
hope it helps