Can anyone help. My gear box on my 56 Buick Special seems to have given up. Heard a loud screeching noise and lost all drive about a mile from home. Had it towed back to friends farm where I inspected the linkage, all seemed ok so decided to start engine in neutral, all fine. Drove around field, everything normal, decided to drive home and after one mile, same thing happened again. No 56 parts available in UK but have been advised to use an adapter with GM400 box, as you know this will mean finding a back axle and all that goes with it, Any ideas on the availability and prices of working dyna-flow in the States. I've sourced a 61 dynaflow, can I bolt my bell-housing to this box???