Googled it, prices/availability all over the place this place usually has stuff
https://www.rockauto.com/en/parts/moog,8236,coil+spring,7512.
Recommend not cutting first , we put them in my sons stoch 289-4spd car, too high. Sometimes Moog stuff is too tall, and does not settle. Might be just right for your setup first try.
For comparison ,I have 8236 1/2 coil cut sits about stock/level with 28" front, 29" rear slick. Mine weights 3150 no driver, Glass fenders, bumpers ,hood, decklid, alum heads, intake, radiator, lexan windshield, plastic race seats, lightweight steel doors, no heater box ect.
I like to keep it about stock height so headers clear on/off trailer.
Good luck maybe see you at Glory Days Byron, say hi to your Dad, Bob