There are a few reasons:
1. SVTs are currently widely available at good price.
2. repro scope and mount are also currently widely available at good prices.
3. it seems easy enough to just cut out the notch.
i think original is not widely available now. last time when they were for sale was 1250.00 CAD (plus shipping and tax), but a clone can be done for half this price, for now...
well, i find myself difficult to bubba a milsurp as well. so, i might end up getting all the bits and pieces and not doing it in the end...