Before I got the MR2 I snazzed up my little Aygo with some nice doorsills and a flashy exhaust tip (+5hp yo!). I actually had these parts laying around for quite a while before installing them.
Installing the doorsills is as easy as it gets, they just stick on. First I cleaned the bare doorsills. To keep both sides symettrical I measured the distance and marked the start with some electrical tape.
After that it was just a question of sticking the sills on, starting at the tape and keeping it straight. Looks much better!
Another easy optical upgrade is the chromed exhaust tip. It just bolts on, but you’ll want to keep it level, for looks.
A side effect of the exhaust tip is a weird little rumble in exhaust noise, I like it but some people may be put off by this.