I think you can drop the base another turn. I have my 66 vert down to 280 lbs with 11.8 grams of weight on Tim Hyatts levers. What size slick is that? The 3300 lbs, is that with you in it. My 66 with an aluminum headed small block hard top only and no bumpers, full stock interior came in at 2805. Did you do anything to front end for bump steer? My front is almost on bump stops and the nose is almost fully extended all the way down the track.