Thanks, Just did a tubular k member, also has afco 30022 (80/20) front struts / coilovers with viking 14" 150lb springs.Your mph is pretty damn good for your set-up. My set-up some years back was almost identical to yours, only I was T5 with 3:55 and mega bite Jr LCA's. My best times were in the 12.70's with 1.90's 60'. My mph was usually around 107-108 if memory serves. I simply wasn't putting enough heat into my tires, and my 60' suffered. I could have used a simple and fairly inexpensive line-lock system and my 60'/ET's would have come down.
Was thinking, if you're gonna pull the engine anyway, this would be a great time for a tubular K with A arms (if you don't have it already?) or/and some lighter front springs. With some single adjustables up front and a line-lock system, I would be surprised if you didn't see low 12's, possibly high 11's if you're mph is any indication. Congrats on some nice runs!