>>3752
Rust on sills and arches. Can be fixed but can become costly.
Before mods I'd start with maintenance, get everything working as it should. Brakes, suspension, full service ect.
I own a 1.6 mk1 myself and the mods I found to be good ideas were:
>Suspension (Miester R is god tier)
>I put a full 1.8 braking system on my 1.6 (with braided hoses and blue racing brake fluid)
>Air filter and FULL exhaust system.
>I put the cams from the automatic 1.6 into my manual to gain more torque (won't work on a 1.8)
>Full bracing (like strut braces and, I can't remember the name of the other braces but they go underneath)
Other mechanical mods I haven't tried yet so I can't comment.
As for visual mods, it's really up to you. There are so many different things you can do to one of these. Just make it your own.
Hope this helped.