Smokie20

i just bought a set of SLP heads. they are mid length and came with the car. The original owner took them off because he said it was too loud for him (he was 65 years old so i dont blame him). so all the parts should match up without any problems. i was just wondering how hard it would be to change it out with jack stands and also if i need to do any welding. there are clamps already but im just not sure on what to do. please give me all the info you can!!!