more exp...
Continental car is totallt different from jdm machine, for example civic ef7,eg6,eg9,ek3,4,9 type-r, integra, crx... they are all using the same platform and wiring, the only diff is computer and engine, therefore japan car manage to control their cost and sell it at a affordable price, but come to continental car, take my bmw e34 as an example, although is 5 series, we all knew M5 is cool but the inner is totally diff from normal 5 series, 520,525,528,530 they are all using M50 engine, only diff is capacity, but M5's engine is S50, computer, chasis and a lot small spot is not exactly the same although they look alike... reconnect wiring is a problem too cos if the length of wire differ from com setting, the signal ll be in a mess, means u can start the engine but it can only perform 80 maybe 70%. One E39 535 (v8 engine) convert to M5 (also V8 engine) although same v8 platform yet almost all parts are taken down left the platform ( like when u wanna put a roll cage : )) then apply it with ori M5 parts, troublesome, expensive (cheaper then buy one ofcos...)
I do know that those complete car from brabus, kleemann, AMG, mkb, carlsson and etc are perfect, but what makes them perfect is not only engine but also the balancing of whole car... C320 add on AMG supercharge and change pulley for higher boost can only keep up with ori C32 AMG, then the C320 owner change pulley again for higher boost ...BOOM...... one more things, these brand arent cheap at all...
Somehow there is some different between bmw and merc, youngster normally go for bmw and mature family-bounded people ll go for merc, tats y u can only found cheap local made strut bar (rm150-300, normal ac schnitzer around 1.5k) for bmw but no merc, and other country enthusiat ll invented performance part for bmw like uuc, active autowerks from us, chenge from taiwan, ESS supercharge from sweden and a lot more... but for merc, only acc like bodykit, rim, suspension... (when i mod my bmw last time, i went for chenge, cheapest and performance proven) obviously merc doesnt falls within target market of these people, therefore you have to pay more effort to fulfil your dream to own a perfect mercedes
since your ride is ori 3000cc, i would suggest you go for supercharge, port & polished and rechipped or maybe high cam too. Dont try to win japan car at 0-100km, gymkhana or quater miles, show them you can enjoy air-conditioner, with harmon-kardon audio system and no any outside sound at all while driving at steady speed 200kmh or more while they are suffering from bad sound proof ( wind, open pod filter, n1 straight flow exhaust, engine roaring, tyre, girfriend vomitting cos of stiff suspension...) anxious that the the next bump might turn them over to next lane cos too light weight...
This is so called " quality of life" lol...