Not a pro here either, but I think the rear is too high and the tire too soft. I have a 67 Barracuda and i like to keep the upper wheel well lip about 1" above the tire. I use Vikings doubles on the front at 1 or 2 clicks rebound and 12 compression. Calverts on back at 5, but next outing i will try 7 on rear because i get a ton of extension. At 1 click rebound i was pulling 1 foot wheelies, 2 clicks tamed it down alot to 5" wheelies. I use a tubular upper control arm as well. My drag radials hook like glue. One other thing, put some 12" extensions on your headers, you might find some power there. I think your porpoising my be the soft tire, because when you pull up i see the car bouncing from the soft tire.