I think the dash is going to be somewhat difficult by hand unless you can find a real artist. Believe it was originally a printed process where the flat steel was patterned and then stamped to shape.
There is a company in Winter Haven, Fla --- Grain-It Technologies
http://www.woodgraining.com/ which has a process using plates and rollers --either DIY or will do it for you-- which might be able to help -- if they have a pattern plate. At one time I believe they had something very similar but hadn't checked their site in quite a while and didn't see it today.
The basic DIY kit is not cheap but without some real talent at the end of a brush, if they have a plate then maybe the best option. Might be worth a phone call or if close enough even a trip to see what they say.
On the filter, unless someone comes along that has been there already and found a number, if there is a Napa nearby you might take your old one in. They have 38 P/S filters shown in their catalog and several look like very good possibilities--if the clerk will take the time to look thru a catalog. A couple I looked at are off by a slight bit in one dimension or the other but since there is a fair amount of room in can, just something with the correct center might work. Here are just a few off first page.
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