I bought mine from Tradex as well
Mine was drilled for weaver mounts although the back one had to be modified for the charging hump and for the bolt lift. I had to use oversize screws in the back because they were stripped and couldn't be tightened properly.
I've never seen a mag conversion kit for a 96 they could exist though.
A 98 trigger guard won't work because the stock bolt spacing is 7 7/8" and a 96 is 7 5/8"