I might as well get enough to do 2 frames. I guess it needs to be original 3m. Any recommendations?

The 150 micron tape from Demon Tweeks (website or ebay) appears to be the same as the 3M stuff invisiframe use. Some batches have had 3M on the backing some not, but all seemed the same. Easy to work with and heat will form it on compound curves. Obviously 300 micron tape will offer more protection (I like that for under downtube for example) but is a little harder work tight curves and is more visible.

Invisiframe kit if they do one for your bike. And get it fitted by a pro, not worth messing it up yourself.