diagnosis & repair for 99 F-359

Outstanding! This truck underwent an engine transplant. After having one mechanic replace an engine with 600+K with one with 80K, the 'new' engine wouldn't produce full power and would "miss" intermittently at random times. (Idle, midrange and full power?) The vehicle went to 4 different service centers. Ford service 1st... (avoid altogether for diesel repairs) and followed by 3 reputable diesel specific repair shops. Not even a suggestion..."computer doesn't see any problems, passes pressure checks, injector "rattle test" etc.) These guys gave me my 600+K mile truck back 4 days later running like it came off the showroom floor. Courteous, knowledgeable and friendly. Worth the money...But...not cheap!