CHEAPest way to convert rear axle bolt pattern to big bolt pattern???

Loosenutz said
I thought about that but the cost to make them is too high. I had to machine them on a CNC mill because our lathe is setup for small diameter parts 100% of the time. I took me over 5 hours to make them this way.

Understood. Since you said you made it I thought you were set up for it and it wasn't too hard/time consuming.