Glass pack on '93 ford f150?

no you don,t have to bother the cat. converter. the muffler sits behind the cat. a thrush muffler would be cheaper then a glass pack and it will make it loud. all you do is take your muffler off and put the thrust muffler on. you might need a reducer unless the muffler fits tight enough on your exhaust. i understand about your budget. the way the economy is you have to watch your money. check auto zone and see if they have what you need.