COSE should be much faster, but it depends on stock availability as well. Cost wise might actually be lower than authorised, but maybe not by much.

Since your car doesn't have warranty already, it may make more sense to get the parts replaced at reputable workshops such as Zordaq Motorsport. They sell genuine proton parts and the labour cost is much cheaper. They may even be better than doing it at COSE assome of COSE's foremen/technicians don't really check their job quality.

You just need to make an appointment with them.

1. Engine mounting set - get the entire set replaced. total cost is within 5xx if I'm not mistaken at Zordaq, all genuine parts. Apparently replacing the top two only without the bottom two will reduce their lifespan.

2. Lower arm both sides - What is the vehicle's mileage now?

3. Front absorber - Get all four changed at the same time. Just buy original proton absorbers for suprima as their price is almost the same as the ones sold by spare part shops. Zordaq also sell genuine absorbers.

4. Module sensor - What is this for? Parking sensors?

Nope, but they do a lot of protons, so they're a safer bet if you want to have your proton car serviced or repaired. I just happen to say it more frequently cause I don't know any other shops besides some others that I go to for minor jobs.