Opinion on motor
 

I have a 2002 Civic LX Sedan automatic. I currently have a D17A1 in there. I want to put in a K20 but dont know which I should go for. I want to put the
K20A2 (220HP) but I think I the K20A3 will be the only one that may fit. Which sucks cause I want the A2. Yes I do plan on switching it to standard once I do the swap. Help me out someone and tell me what will be better and where to get it. I got the money so I am not concerned about that. Help me out. Thanks