Will it be okay if i put on a glass pack/cherry bomb?

exhausts get annoying over time if there too loud. if it doesn't have to be fixed immediatley. save the money get it fixed correctly it will save you money long term especially when you go to sell the car. it depends what part of the exhaust is being fixed if your going from the catalytic converter back or just he muffler replaced which is bolt and you could do yourself. also with a car that old its very likely the exhaust has been modified or replaced and already is welded at which point do not attempt to do it yourself take it to a shop and get it done properly. idealy save your money and take it to a place to do it right. cops will find you pretty quick with an exhaust on a older sports car honestly just cause you can't see them doesn't mean the can't hear you.