You can go to the following web site and find the info. you are looking for.

http://www.magtechignition.com/

MagTech Ignition
1150 Auburn Street
Speedway, In. 46224-6296
(317) 241-4100
edstarr@magtechignition.com

We have purchased a new mag and had him rebuild them over the last several years and has always done us a good job.

Kirk Robbins