The differences in the kits has to do with the lines between the travel valve and the holding valve. I know that one steel line is still available. Contact Brian and see which one. With luck, it would be the 180 line that joins the valve to the drive motor. The fitting that makes the other connection is something that should be available from a really good hydraulics shop.
You could then try to use some heat on your original steel lines and see if you can reshape them to work. Last resort would be hoses and fitting combos to keep the hoses straight because they will be too short to curve them. You must use 1/2" ID hose rated for 3000 PSI minimum.
You could then try to use some heat on your original steel lines and see if you can reshape them to work. Last resort would be hoses and fitting combos to keep the hoses straight because they will be too short to curve them. You must use 1/2" ID hose rated for 3000 PSI minimum.