right guys ive to change the spark plugs on my car. took the old ones out and opend the new ones (new ones are vx ones) but the old ones are smaller and only has two metal bits at the bottom of the spark plug 
what i want to know is it safe to put the new ones in and will it cause any damage or is the old one thats in the car the wrong one. ive been to vauxhall and its the only plug for the 2.2 and the old one thats in the car isnt am vx one