I want to get a pre 1975 Camaro but want to have a new motor with fuel injection. Is this possible?

 

Sure, you could always do an LS1 swap, or there are plenty of EFI systems available for older engines.

 

Sure, I'm in the process of putting Throttle Body injection on my 79Z. The fuel system is the only part that's been a PITA for me, otherwise, it's pretty straightforward.

http://www.akmcables.com/79z28.htm

Tuned Port Injection (TPI) is the 'next step up' from TBI. TPI systems were found on 86-92 F-bodies (and 85-91 vettes).