It seems i always end up with the runt of the liter with more modern cars.
87' Honda Civic Si (only 1 year/1car for the engine)
88' Acura Integra -- 1 Year for the Engine only US made
and now The 95' Camaro 3.4L

So what real options do i have with this?
I'm currently replacing the T5/M49 due to it detonating.

 

Well you could just put a CAI on it or build it into a 7 second NO2 breathing monster. Your going have to come up with a little more information about what you want out of the car and some type of budget. Please don't just say you want it as fast as possible. Fast at what? Autocross, 1/4 mile, top end.

 

On the bright side the 3.4 was unchanged for the 93, 94, and 95 Camaro so at least you have a better parts supply.

 

Can't agree more with Gorn. Without specifications and what goals you have with the car and how much you want to spend it's difficult to give suggestions. Anything is possible with a pile of money!

 

get a 6speed and lower the gears in the rear to start with.

 

Start with better airflow in and out of the engine -- CAI, Cat-Back, headers, high-flow cat... Don't forget about suspension and chassis -- Biltstein HD Shocks, welded SFCs, STB, bigger Sways.