I have personally dealt with both andy @ pwr and stu @ inerta both are top notch builders I would highly recommend them to anyone stu built my 5.7 big valve heads & cam. Andy was going to re build mine 2nd time around went above and beyond with help knowledge and tech info wish I only spent some money with him. I called mmp totally got blown off poor customer service guess my $$$ was not good enough piss poor customer service imho....If its that hard to spend 10k on motor and another 8k on blower 2k on fuel and another 6k on trans 6k on rear axle. I wonder what it would be like if I had a problem?????