I have a 95 HSTC that I picked up used with very low miles. I carry a passenger and gear for road trips. I have had some carb work done and screaming eagle pipes. I want more power on the freeway at 70+mph. The andrews EV27 and EV 13 have been recommended but I am seeking someone with experience with these cams and their input. One tech also said i would need adjustable pushrods and new lifters. Please comment. Thanks