I purchased the “ELAN SPRINT” stripes from r.d. enterprises a little over a year ago. I believe they had a run of these custom made. You might give them a try.
Try contacting Paul Matty in England. Thay have an extensive parts department and will sell you new wheels (approx $200), rimbellishers (approx 35) and Sprint decals (approx 125). Have look at www.paulmattysportscars.co.uk. You could also try Christopher Neil at http://shop.christopherneil.co.uk/acatalog/
I bought a set of decals for my Sprint a month ago from Sue Miller (Mick Millers wife). Excellent quality and cheaper that anybody else I could find. Her email address is [email protected]