Here is one that I created that worked just fine!
• 8 oz sweet almond oil
• 2 oz castor oil
• 8 oz coconut oil
• 8 oz palm oil
As Soapmaker Man says, any recipe can be used just substitute GM for the water in your lye solution (although there are certain steps you need to take, and ask if you don't understand).
I like your recipe because it's a fairly mild recipe with good lather. I've been making a lot of variations of a similar recipe where I use equal portions of a soft oil (sweet almond, olive, canola...) plus PO, CO, and about 10% castor oil, and all these variations are coming out nice and mild with lots of lathering (from the castor).
It's hard to go wrong with a recipe like the above and I think it would make a great version of GM soap.