The 201 rods are insert bearing rods. The only thing I'm not sure of is the bearing/journal width. If it's the same as a 218 you'd be in business. The 201 and 218 rods are the same length, but the 201 has a .125 smaller journal size allowing a stroke increase of .125 ( 4.75 for a 230 ). You would need a piston with .250 less compression height for this combo ( rod .125 long + .125 longer stroke ). I don't think there would be a great deal to gain in just using the longer 218 rods in a 230 since it wouldn't change the rod ratio an appreciable amount and would require a custom piston, although, you might be able to use the stock compression height pistons and cut the tops down if they are thick enough ( you'd have to remove .125 ). Or on the other hand, there's your chance for a popup piston.
