timing chain/push rods

Use a Roller Timing Chain & Gear's for sure. Comp, Cloyes, FRPP and JP Performance (Yella Terra) make good set's for your 5.0. As for pushrod length I highly recomend getting an Adj. pushrod length checker (Comp Makes Decent Ones $14.00) to determine the exact length you need.
 
True... but I alway's say it's good to check. It's happened to me twice were I have went with the manufacture's recomended push rod length and they were off by a bit. It's impossible for a manufacture to have the correct length for every engine out there as all combo's are different. They are alway's close but should be used more for reference I feel. An Adj. Pushrod length checker is the only way to go.