First convince all the 20 MPs jointly ,Your own Kerala State government for contributing 50 % cost sharing of Railway Project for priority and 50 % cost sharing and free land for any Railway Project for the top most priorityas done by the KARNATAKA STATE.
.Then approach Central Govt RM with list of Project needed for Kerala State as1) FREE LAND +50 % PROJECT COST STATE SHARING ,2)only 50 % PROJECT COST SHARING and 3) FULLY CENTRAL 100 % COST OF THE PROJECT.