Check out summit racing, they have braided line kits for less than 100$.
From what I understand, the lines are relatively low pressure and you could use rubber lines with barbed fittings on the trans and cooler.
1979 Olds Cutlass. Tuned LT1, 1.6 rocker arms. TH350 . Locked 7.5 rear.
1994 Lincoln Town Car, 100% stock.
1999 Jeep Cherokee, 4.0, 4X4. Stock for now.