Urugly

As some of you may know my motor cracked 2 cylinders. I am still new to this so I have a lot of questions. Anyways motor is a B16 sleeved to 84mm.

I had the machine shop transfer my parts from my B16a2 over, but came across a snag. Let me know if this is right.

They said the pistons I bought were from a stroker kit and I am .25 off with my stock B16 crank. He said that I would need a new crank? Is that right? Will a GSR crank work instead. I have already spent enough and now another expense.

If so, what is a good crank for cheap? Sounds like an oxy-moron "good crank for cheap..." hahaahahah

So I need to know if they are right for one and what crank can I use for 350-400 HP goals.

Thanks.