alternator or regulator

[Chuck Ciaffone <chuckc@ibm.net>]

How big a deal izzit to replace the voltage
regulator in a rebuilt Lucas alternator?

After replacing a 3-year old battery that went dry
once or twice (over charging), I did a voltage
test at a high idle: about 16 volts. I would guess
that might do it.

In any case, I guess I have 3 choices: 
A. another rebuilt Lucas
2. replace the regulator
c. look for the Mitsubishi conversion

Opinions?

chuck