I have started with a 2001 volvo s60 2.4t. I bought the car about a year ago and have only now started doing mods to it. So far the only exterior work i have done is replace the grille with an IPD black mesh one which looks awsome and i have installed PIAA extreme white bulbs for my headlights but thats it.
IPD Black Mesh Grille
Stock 16 inch wheels. but i think they look good.
As for engine mods i have put in a eurosport tunning air intake, a volvo t5 turbo, IPD HDTCV, and NGk Spark plugs at the momment this is all the upgrading i will do but i plan on installing a eurosport tunning down pipe and exhaust system. possibly getting a ECU upgrade but that will be the future.

Iam currently going through the interior and switching out all the stock speakers. more pics when i get to that soon. I got some polkaudio speakers just for my front two doors maybe the rest will come soon when i obtain money.
I just recently installed a IPD boost guage and pod, It looks pretty damn sweet picture will be put up soon when i fix my camera.
If you have any ideas of things i should look at to install let me know.