I have a 55 fordomatic that was overhaul 22 years ago but only driven 10k since then/I purchased car in feb of this year /it has started to leak from the front seals/how hard is it to replace the  front pump seals and converter/can unit be pull with out removing eng? shop whats $400 to do it /looks like parts would be lest than a 100/any help would be a appreciated