Personally, I would do the same...
.. However, I just came to a nasty realisation recently when pondering a build... I don't have any frigging receipts for this junk I've got lying around... which is not going to fly at registration time. So unfortunately it may be that you have to be careful not to use "too much" unless you have licenses of cars you declared as donors, and can say the parts were off those. Here in Ontario, it appears I need to be particularly careful to document where every part came from.
A particular shame about that is that some wreckers yards have "all you can carry" days. If you can stagger out of the gate with 200lb of parts 10 times for $50 a throw, you darn well should be able to find enough in your 2000lb parts pile to make a sub 1500lb locost.... However, while a wrecker would happily write you individual receipts for anything you got at normal prices I don't think they will be so accommodating on deals like that, over and over again. Best way to do that I guess is to buy a real dog of a donor, for very cheap, and say all the "nice" parts you picked came from it.
Anyway, I'm just bemoaning that I could potentially put together a safe and reliable (Maybe not top performing) locost for $1000, but I'd never get it "legalised" for road use here. The deally with the MTO seems to be, guilty until proven innocent.
traynee rockit serjun
DD#1 '95 Ford Escort Wagon 1.9 Auto, self PnPed stage 2-3ish head, 11ish CR, Airhog panel filter, awaiting headers and intake mods. ~110-120 BDHP
DD#2 '88 Plymouth Voyager, 3.0 Auto, shift kitted, alloys, walker exhaust, timing advance. Awaiting PnP heads. ~150 BDHP