I don't think that there is such a thing as an aftermarket cam bolt with MORE range built into it. Look at how the stock ones are made: They have the large outer flat "Washer" that fits between the ridges in the UCA mount then the shank of the bolt is sized to match the inner diameter of the UCA bushing. There is no way I can see to alter that to get more range. I could see grinding off the"stops" in the UCA mounts and moving them to allow whatever range you have to be moved further in or out to meet your needs but aside from that, I don't know. There are tubular aftermarket UCAs that are designed to begin their range of travel in the positive and all adjustments from the baseline take you into MORE caster. In other terms, the upper ball joint mount is already rearward more thanit is with a stock OEM control arm.