How to convert `where` part of Linq Expression into reflection?

I want to convert linq expression into reflection.

exp1 = p2 => p2.s[new int[] { 14, 5 }].Select(
             (item, index) => new { item, index }).Where(
             x=>x.index > 2).Select(x => x.index).ToList();

I have converted the select part but having trouble in conversion of where part.

here i want to convert where(x=>x.index > 2) part of LINQ expression into reflection

This is how i converted select part:

var enumerableSelectIndexTSourceTResult = (from x in typeof(Enumerable).GetMethods()
                                                       where x.Name == "Select" && x.IsGenericMethod
                                                       let args = x.GetGenericArguments()
                                                       where args.Length == 2
                                                       let pars = x.GetParameters()
                                                       where pars.Length == 2 &&
                                                           pars[0].ParameterType == typeof(IEnumerable<>).MakeGenericType(args[0]) &&
                                                           pars[1].ParameterType == typeof(Func<,,>).MakeGenericType(args[0], typeof(int), args[1])
                                                       select x).Single();