How hard to replace throttle/shift sidemount

[brianct12]

Boat is a 1986 and has the original "concealed" sidemount control arm. * You know - *the kind which is just the throttle/shift arm ... *the choke and key switch is on the dash. * It's a little weather-beaten and I have access to a brand new unit for a good price. * How hard would it be to replace this ? * I havent looked to closely yet .... but it seems the unit would be hard to get at .... mounted behind the fiberglass liner. * Anyone ?* Thanks.