307xt 1.6 benz. 2003 model in 5th gear over 130

My friends car 307 xt 1.6 petrol 2003 model 184 thousand km is not going to go. He wants 6th gear after 130, is this normal for a pejo at this age? I have replaced the spark plugs, oil filter, the belt, the exhaust, the charger, the starter, the oil, everything has been changed. Should I renew the engine? Or is this car not going because of the Antipollution fault article?

The clutch lining is not finished, I have 2004 xt, about 170 very good acceleration, the last time I took the wind and saw 195.If it was hard to get stuck and the calio was 175 te. ynusemr to 2014-04-10 14:38:31