theres real no way to repair a cracked dash, you can probably add some sort of body filler where it is cracked but it'll probably just make a huge mess. your best bet is to buy an uncracked dash.
for the flywheel, you should take it to a shop and check to see if its warped at all, then have them replace it. for aftermarket, i would recommend a fidanza lightweight flywheel as they are high quality.
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