I'm doing a T-5 swap into an auto, and i'm having trouble installing the pilot bushing, is there any secert to this ? hammer is not really working that well.

 

Then either your hammer is not big enough, or you're not swiging it hard enough, or both.

That's all I ever use.

I usually put a socket on top of it as a drift; helps avoid munging the bushing. It should go in at least as far as flush with the surface of the crank around it, maybe a little under flush. Don't leave any of it hanging out.