I would think that almost any bolt action can be converted to DST, the easiest is a 98 Mauser. I have made this change to several 98 Mausers, no doubt one could do the same to a 93 to 96. I purchased the units from Brownell, without looking it up I think a DST unit is in the $200.00+ range and the bottom metal must be modified to accept the unit (just another option for you to consider).
Your best option is to find a complete gun on Tradeex for the price of the unit + installation, I have looked at several on that site - they don't last long. If you add 7x57 or 8x57 your chances there are much better.
I believe Epps has one on their site at present that sounds very good, give it a look.
FWIW --- John303.