Mic looks after his car and parts very well. May be a little slow this time of the year but GL with the sales. The C-one muffler was used by both of us, no issues what so ever. There is a dint however this doesn't affect it structorally. On a 2ZZ it will improve low to mid ranges accompanied with a quality catback, frequent lift users will love the sound, can supply or view videos for examples. Sounds the same on idle and mid rev ranges on a 1zz. You can tell the quality of the product just by taking a peep at the welds. - If you are scepticle about the coilovers, they can be tested. Not once where we faced with any sort of problems, whether it may be leaks or noises. It is great for street, every day driving (cept parra road jk :P). They're not designed for track but I have known people to use it. I personally wouldn't as the stiffest setting IMO isn't sufficient enough. These not only feal great but mind you are in excellent condition.