Converting an MGA generator system to an alternator is a straightforward modification and is described extremely well on the following 2 websites:
Below is the installation in PSJ 903
|Alternators are shorter than generators and require modified rear brackets.|
|The 1800 engine shown here has both generator and alternator bracket
holes. A bracket has been fabricated that uses both front alternator
bolt holes and the rear top generator bolt hole.
The 1500 engine has only 2 bolt holes for the generator and needs a unique mounting system