Just FYI ... the heater core is an ordeal and one you'd start Friday night to plan on finishing it Sunday, and does require dash removal. But, I personally found it less challenging than either the front wishbone replacement or water pump replacement. The water pump replacement turned into "oh you touched that 25 year old coolant thingie or belt tensioner guess you'll have to replace everything and spend a week on it waiting for parts" type of job. The front control arms were a frozen-nut-get-out-the-angle-grinder adventure that I still did in less than 20 hours.