from what i've seen and read the vh45 weighs between 500-600 pounds WITH th z32 transmission, versus a rb20w/trans=600 pounds. so its not really a whole lot of a difference. i'm not sure how much a rb25 weighs but i imagine it around the same. weight isn't really an issue for me and I am by no means a racing professional. i've heard varying opinions from people who've done all kinds of swaps its all a matter of suspension tuning. theres a guy in the vh45 forum with a s13 that he takes out to the track and daily drives as well. i think it could quite possibly be one of the more unique swaps i've seen. don't get me wrong, sr's are cool and all, rb's are impressive as hell, but they both seem all too common these days.S15nS13vert wrote:for the track like drag racing?i am not a "racing guru" but don't you think it will be heck of alot of weight for the vert, i mean u gonna be nose heavyi think