Just a little hello from south west france to introduce me and my new car

i have just inherited from my grandfather. This car was his baby and is in immaculate condition.
1995 Camry 3.0v6 (automatic) 128,000 miles on the clock
Managed to get 100mph out of her on the motorway yesterday, didnt want to go faster as there was a lot of traffic
A few questions i have --
What top speed should i be looking to get out of this car
Is there any mods i can do to make her go faster
Any tips or hints i should take into consideration
Thanks for this great forum and i will post some photos soon