I have a 66 mustang with a 289 in it. What is the lift and duration for stock cam? I have world product Windsor Jr. heads, headman headers, air-gap eledbrock intake, 650 v/s holley, and t5 with 4.11's. But the heads and t5 arent in yet, the t5 goes in tomarrow. I was wondering if with this combo i will see a good amount of change if i stick with a stock cam. i Do not want to pull the engine. So stock cam ok? Also the cheap $80 cam and lifters from summit, are they any good? I know there not as good as say a 200 set of Crane, but are they decent?