The chances are somewhat slim - I've seen 1930's manufacturing documents for a large format Tessar, and it had dozens of recipes combining different variations of each element, so they obviously compensated for product tolerances by matching the elements and shimming accordingly. The Sonnar is even more complex, and presumably less failure tolerant, and Kiev 4 age Jupiters seem to have deviated from the original Jena formula.
Even if you have access to a collimator, have the right shims and start out with a early (Jena glass) Jupiter, you will most likely end up with a somewhat different lens - probably with enough of a different focal length that it will not rangefinder focus accurately any more.
If you already have a dead Jupiter and can collimate, go ahead - reducing from two dead to one odd lens is an improvement. It won't be worth while buying one, or destroying a good one - Kiev 2 era Jupiters are barely any cheaper than their Jena counterpart...
