You will need 2 solenoids, 1 for each front wheel. No modifications to the ABS is needed. I remove the BAS/ESP fuses when I am at the track so I can do a proper burnout without the ABS engaging.
You will need to find the correct brake line adapters which can be expensive because they are an uncommon size. As for wiring, I have mine wired to a momentary switch on the center console.