360 heads 974 casting 2.02 intake 1.60 exhaust valves

Wanted to raise the compression on my 360 without having to swap pistons so I'm getting rid of my heads. They are rebuilt 974 casting heads with 2.02/1.60 stainless steel valves with 3 angle valve job. They have phosphor guides and have never seen port work. The valve springs were just swapped in for Isky 575 lift dual springs for flat tappet cams. They were slightly milled to 68cc's. Have lots of money in them and they have about 500 miles on them before the springs were changed. They are off the car already and ready to rock! Asking $550 plus shipping/paypal. Pm for pics and leave a email please.