Ok new to the world of rx need pointers plz
 

I got an 03 rx8 that's having a starting problem the guy I got it from told me it has no spark so if u guys could point me to a point where to start and I hope it doesnt cost to much to fix. When I get this running I want to biuld a turbo kit I have a greddy super 70 t3 mount with a compressor trim 75 a/r 0.7 and a exhaust trim of 78 a/r 0.82 and a 42mm external wastegate. I need input on fuel pump injectors and an ecu that won't bust the bank.

Thx heavyduty