Convert Old Dover P125 valve to Dover I2 Valve

We have a customer that isn't willing to replace the power unit but has a bad older p125 valve. I remember way back people converting this valve to i2 style. Does anyone have information on this?

Thanks for any help

TKE/vertical express use to offer a I2/I3 conversion kit for these but its my understanding they don't offer it for every application if even at all anymore. I would contact vertical express with the Dover job number to check. If I remember correctly though, back when they were selling the conversion kits the cost wasn't all that far off from replacing the whole pump unit in some applications.

Thank you for the reply. I got them to go with a full mod.