I cannot attach to any of the existing systems, this quote is too remove the 2 indoor heads and one outdoor unit. We will install a new Mitsubishi indoor unit and new outdoor unit, reuse drain line, reuse electrical wiring, reuse hurricane pad, new copper line set, handyman will seal any holes and patch everything up and Louise will pay for that separately. Louise call me if you have any questions. Permits and inspections included.To be installed above her desk.