9's (define 9's...) can't be a problem. Mine was approx 3750lbs (only had fibreglass hood) at the time it ran mid 10's with only the 528ci, flat tappet cam and single 4bbl. If I changed it for a roller, tunnel etc. it could get me the 9's but I went the 4-speed and later race only (still 4-speed) route instead.