Your oppinion is not only un solidified but bias due to the fact that you drive a Turbo SI and its also not a B18, So in your case it maybe better for a turbo B16 but in the LS Vtec turbo Vs. LS/turbo the bottom end is plenty strong enough and as was said the about the "BUILT" comment, I agree but as also said who builds the motor after bolting on a turbo....Not many ppl who are just looking for street applications....So in this case the motor will never have to be built.....as for boostin an LS N-Vtec who redlines everytime they get in there car anyways, even if so as long as your not hitting the limiter everytime you take off from a stoplight or anything like that your gonna be fine.....The B18B can take as much abuse as the SR20DE N/A with a bolt on turbo and no "Builds"

Just my .02$