How do ya get a 1.75 rod/stroke ratio in a crvtec?

Anyone know what a good high compression crank/rod/piston combo is to get a 1.75 rod to stroke ratio in a b20 with a GSR head? It doesn't have to be exactly 1.75, but I want it close. I don't mind if it lowers the displacement a little. I'm going all motor (naturally aspirated). Also, if you know of a good site, or webpage to find info on this, let me know.

Crvtec.com got changed to some advertisement/search engine page. Must not have been able to pay the bill?