R&R heater core on 1995 Chevrolet Monte Carlo

how long does it take to replace a heater core in a 1995 chev monte carlo? and do i need any special tools

2.5 to 3.5 hours depending if the vehicle has AC or not, go to sign up and put in heater core then click on Repair guides the complete instructions with diagrams are here
1 more answer
If you need more illustrations or help for you DIY let me know i can provide you with some help with Illustrations.