The inspection hasn't changed, the reporting of the inspection has changed. Everything has to be documented.
If your Deuce coupe would have passed a 'cert a year ago, your deuce coupe should pass a 'cert Apr.1.
If your deuce coupe would have passed a 'cert last year...
with a wink and a nod from the certifying tech... that tech won't pass it because he has to take pictures of everything and upload those pics to the MOT mothership for further inspection (YEAH RIGHT!) later.
I have a '84 G body with the whole front suspension and brakes re-designed by ME. I am quite sure it would pass a 'cert no problem 'cuz no one will ever notice the change as I used all GM parts (from other GM cars and trucks) and it looks stock... AND (here's the important part) my shop(s) would go to bat for me IF it was questioned (as much as they could anyway)
If you got a sedan with a Mustang II steering rack ( a very popular swap), the tech can decide if the rack is safe. What the tech CAN'T decide is if the rack is safely attached to the frame it wasn't designed for, or if the steering column geometry is right (if didn't use the Mustang steering column).
A friend was having trouble getting a vehicle safetied as the stock brake system had been replaced. New brakes were six piston wilwood on rotors the size of the stock wheels all around but no abs so it couldn't pass. No brains were allowed. Check boxes only.
That one was easy. The problem was no ABS, not Wildwood. No ABS on an ABS equipped car is a HARD fail. It's a hard fail if the ABS, SRS or CEL light is on. It's a federal crime to modify it so the light doesn't come on when it should.
... but by the letter of the law: Wildwood IS a problem. The brakes the guy took off the car were DOT/MOT approved. No Wildwood product has any MOT/DOT approvals. Very few "aftermarket"parts have been inspected by MOT/DOT for road use... so you see "For off road/closed course use only on everything. 99.9% of aftermarket exhaust have no DOT/MOT certifications, so are illegal to run. Just like the Mustang rack in the sedan: that combination was never MOT/DOT approved, so technically no legal.
SO... IF you have a vehicle that is a mish mash of parts, that has an ownership, you can still get it certified, BUT you need a shop that is confident in their knowledge of the law, AND how to put a car/bike together... AND is willing to do certs (certs are a money losing proposition to a shop, the profit per hour is VERY low. It's a lot of work for not much money).
That combination is hard to find. One way is pay more. I expect to pay $300-360 for my next cert (still not enough).
There is a process outlined (in 2006?) on how to get a "hot rod" or home built certified in Ontario. AFIK no one has ever completed that process. The process is impossible in reality.
The mechanical side is pretty straight forward, the emissions side is a nightmare. Stick to pre '72 stuff: NO emission standards.
The only change I can see with bikes is they'll want a picture of the cat if the bike originally had a cat. So save those cats to sell your bike.