I did mine a couple of months ago and just used run-of-the-mill stripper from OSH. I applied it with a cheap paint brush, let it set for awhile, and then removed the old paint with some of those green nylon dish and pan scrubbers you use at the sink. One of the old postings said not to use steel wool as it reacts with aluminum (I don't know if that's true). Anyway, the results were great and did not remove any of the anodyzing- wish it did.
Rich
'73 1.7
'74 2.0