Nadeera Only does Race-car work these days, i know this because I've personally asked this from him. PAS is good, but you may have to wait in a queue, but please call and ask and it won't be cheaper at all. but my personal opinion for you is to try a good local mechanic as this is just a swap job, then you can go for good tuner after. wherever you go make sure to leave de car with safe hands. as these 4AGE BT parts are highly demanding now, every piece of part has its own price . try Saheeq nana at Shaz Auto too he knows his 4AGE's well and Nilantha at Dehiwala. i have both the contact numbers will give them to you