Just to close this off. Took the banjo bolt out after jacking up the left hand passenger side (UK, right hand drive motor!), luckily no transmission fluid lost as I assume it's all loaded the other side, but will be checking the levels very carefully when done. Banjo bolt is ok but the seals looked a bit rough and have sourced them in the UK from Peter at Chrysler Crossfire parts and accessories (also at Chrysler PT Cruiser parts and accessories). A useful resource for parts in the UK and saves the international postage costs from the US.
Thanks again to everyone for helpful advice.