I just purchased a 1986 SRV230 Cuddy and the trim rams are a disaster and completely corroded and falling apart. I'd like to replace both of them however the serial numbers on the casting are completely gone and I can't identify which trim rams I have. It looks like there are several different versions including a Power Trim XD version which I believe they started making a year after my boat was made? Will a set of Power Trim XDs bolt up even if my current trim rams are not Power Trim XDs? Any way to identify exactly what parts I have if I can't get a serial number off them?