Help..!

Hi there, I have a 91' Celica.

I'm looking to get some mods done performance wise... Right now the car does an even 210kmph, but anything above that and the temp goes up. Also the acceleration can definately do with some improvement... As per my chassis no it says ST182...

I really could use some help and I'm hoping somebody out there would be so kind as to help me out...http://forums.beyond.ca/images/smilies/ponder.gif