the heat shields are fitted as std afaik, up to you if u get one or not really it'l prob help to some extent,
why not open your starter up, 9 times outa ten if its newish its jus run dry with no grease in it due to the heat.
the terminals are diff depending on what year afaik!
I got a re-con starter exchange for £55 with 1yr waranty.