Ahhhh...poor bugger...comes on the forum...full of good intentions....keen for ideas....wanting to join the fast panda club....dreams of tyre screeching fun...and fails to get help...lets be honest..also fails to "Try the search button"...or read down the post list at whats going on at the moment!!!
Yamaha R1 engine would do it for me...Oh welcome to the forum and Andrew has given you a great list...how deep are you pockets???...If not buy a hot hatch...
but really just like mini's there are an infinate number of mods you can make. Just got to chose something personal that you can enjoy and are sure will look good.
Si