Allen, the search function for the website is on the right of the top toolbar, the magnifying glass on the burgundy background. The search function for the forums is on the “Forum” main page. Click Forums in the toolbar, and you’ll see a search box near top of page
Sorry, I don’t have any measurement info on the gel cells.
Paul Mossberg
Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
2005 Intermeccanica Roadster
If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)