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A laser cutting place ive dealt with start at $70 for a job, then costs going slowly up from there, couldn't imagine it'd go up too far, as that was them supplying the material and doing .dxf files too.
If you can get it to a .dxf format (basically a universal file) any cnc water or laser cutter should be able to do it. All it takes is a basic CAD program to make those.
place I used just had a massive guillotine.
Time to get a Dual Saw TM
Dave,
Get some newspaper/brown paper & scissors & suitable tape & make your own templates. Its so simple.
Then get a 5 or 4" grinder & those very thin blades. Cut from the top ( treadplated side) using a clamped bit of angle or square steel to get the straight runs perfect IE run the blade up against the steel at 90deg.
For the rounded sides do multiple straight cuts & then round off with a flat file. Use the flat file to smooth the undersides of the whole job.
The rounded fronts for the guards & bonnet can be cold formed using a rubber mallet & similarly rounded item ( I used a log destined for the fireplace) just keep tapping until it matches the Landie.
Then etch prime the aluminium, finishing off with Satin black spraypack.
You should use 5 or so blades all up.
You can cut aluminium with a tungsten tipped tool. Circular saw, router or planes have been in use in the boat building industry for ages. I have just used the tungsten tipped saw blade on my circular saw normally used to cut wood.
I think the black finish is anodized.
For the time effort and possibility of screwing up the cheq plate let alone my mind I could not be bothered making my own and simply scanned ebay purchassing a set of black cheq plate wing tops for around $200.. Went to bunnings and picked up some black pop rivets. Word of warning one needs to hold their breath when drilling the first hole into your nice n shiney guards....)))