I have a 88 4-door EF 5speed ,,,and i went to crank her up this morning and the lights heater radio ect ect come on but if feels kinda clunky when you turn the key (and you know how the key will push back ,like it spring loaded) well it dosnt do that any more

My question is

#1..can I replace the ingnition and keep the same key

#2..does any body got one they can sell me?

#3..what would one cost at the parts store approxitmatly

thanks guys....mike 770-309-3487