hello new here, but i picked up a 2000 tracker for 500 buck just for a winter beater.but it has a few issues,one the front diff is torn out.how far back in years can i go for a new front wad?also the oil pan is rotted my plan is to cut the cross member out and drop the pan weld the cross member back in.but i have the 2.0 motor and was wonder how far i could go back to get the same oil pan thanks.